WILL GIVE BRAINLIEST
Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth.

946, 726, 956, 519, 104, 415, 428, 457, 614, 201, 772, 801

A. mean = 566.5; standard deviation = 261.9
B. mean = 578.3; standard deviation = 261.9
C. mean = 578.3; standard deviation = 68572.4
D. mean = 566.5; standard deviation = 68572.4

Answers

Answer 1

The mean is the sum of all 12 numbers divided by 12, which is 578.25 ~ 578.3. The variance is calculated by subtracting each score from the mean, squaring, and adding all such squares. Then divide by the number of terms (12) to get 68572.35. Take the square root to get the standard deviation, which is 261.9. So the correct answer is B.

Answer 2

Answer:

mean is 578.3 deviation 261.9

Step-by-step explanation:

Related Questions

Graciela is working to earn 200$ . she earns 25$ mowing her grandmas lawn and 60$ for a day of housecleaning what decimal represents the part of money graciela still needs to earn

Answers

25 + 60 = $85. 85/200 and x/100. 100 times 85= 8500. Divide 8500 by 200= 42.5 Hope this helps!

The english alphabet contains 21 consonants and five vowels. how many strings of six letters, each of which is drawn from the english alphabet, contain (a) exactly one vowel?

Answers

Number of strings = [tex]21^5(5)[/tex] = 21 x 21 x 21 x 21 x 21 x 5 = 20 420 505

Answer: 20 420 505

the value 5 is a an upper bound for the zeros of the function shown below f(x)=x^4+x^3-11x^2-9x+18

A. TRUE
B. FALSE

Answers

Answer:

Answer to this question is TRUE.

Step-by-step explanation:

The graph of the function:

[tex]f(x)=x^4+x^3-11x^2-9x+18[/tex] is attached to the answer.

Clearly by looking at the graph we could see that the zeros of the function f(x) are -3, -2, 1 and 3.

All the zeros are distinct.

" Also upper bound of a number 'p' means the set of all those numbers which are greater than 'p' ".

Here 5 will be an upper bound for the zeros of the function f(x) since all the 4 zeros of f(x) are less than 5.

Hence, the given statement that the value 5 is an upper bound for the zeros of the function f(x) is TRUE.

Answer:

true

Step-by-step explanation:

If A(-1,3), B(4,4), C(8,1) , then classify ABC as scalene, isosceles, or equilateral.

Answers

For this case we use the formula of distance between points.
We have then:
d = root ((x2-x1) ^ 2 + (y2-y1) ^ 2)
For AB:
AB = root ((4 - (- 1)) ^ 2 + (4-3) ^ 2)
AB = 5.099019514
For AC:
AC = root ((8 - (- 1)) ^ 2 + (1-3) ^ 2)
AC = 9.219544457
For BC:
BC = root ((8-4) ^ 2 + (1-4) ^ 2)
BC = 5
We observe that it has three sides with different dimensions, therefore, the triangle is scalene.
Answer:
Scalene

The common stock of air united had annual returns of 13.7 percent, 4.8 percent, -6.7 percent, and 27.9 percent over the last four years, respectively. what is the standard deviation of these returns?

Answers

JDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPE

please help asap 45 pts

Answers

C) if you multiply it you get w^2 + 7w +11w+77, which is w^2+18w+77

the answer is C.
hope that help

Find the surface area of the equilateral triangular pyramid.

Answers

area = 3 * 1/2 * 10 * 12 + 1/2 * 12 * 8 = 180 + 48 = 228 answer

the answer is 228. hoped this helped

14) Jillian has $50 that she plans on investing in an account that will double her money every week. This can be represented by the equation M = 50(2)x where M represents the amount of money she has and x represents the number of weeks that have passed. Her uncle Charlie gives her a gift of $400 so she decides to start her investement with that money plus the $50 she already had. What should be changed in the equation M = 50(2)x to represent the new situation?

Answers

it should still be m= 50(2)x just add +400 to the end!

Last week christi spent 2 3/4 hours playing piano this week she spent 3 2/4 hours playing the piano how much more time did she play the piano this week

Answers

Given that last week christi spent 2 3/4 hours playing piano this week she spent 3 2/4 hours playing the piano, the extra time spent on piano this week will be:
3 2/4-2 3/4
Converting the above into proper fraction we get:
14/4-11/4
=(14-11)/4
=3/4
Thus she spent and extra 3/4 hours=45 minutes this week

It’s 3/4 hours which is 40 mins how I did this was I did that then I finished BOOM DONE KID

Solve the equation. 20 = –d + 16

A. 4

B. –10

C. –6

D. –4

Answers

Hello there
The correct answer to this question would be D: negative 4

This is because the negatives from negative 4 and negative d would cancel each other out, to make it a positive 4, resulting in the equation being: 20 = 4 + 16 , which is true

I hope this helped ^^

Claire has received scores of 85, 88, 87, and 80 on her algebra tests. what is the minimum score she must receive on the fifth test to have an overall test score average of at least 82 ?

Answers

85+88+87+80+x/5=82

340+x=410

410-340=70

The original vertices of a quadrilateral are (-2,3), (4,6), (4,2), and (3, -2). After a transformation, the new coordinates are (-1,1.5), (2,3),(2,1), and (1.5,-1). Are the two images similar? Justify your answer.
A) no; The transformation is not rigid; therefore, the quadrilaterals are not similar.
B) no; The transformation is a translation which only results in the size of the quadrilaterals being preserved.
C) yes; This is a rigid transformation which preserves angle measurement and size of the original quadrilateral.
D) yes; The transformation is a dilation which results in similar quadrilaterals by preserving angle measurements.

Answers

The answer would be D) yes; The transformation is a dilation which results in similar quadrilaterals by preserving angle measurements.

The answer would be D) yes; The transformation is a dilation that results in similar quadrilaterals by preserving angle measurements.

What is a transformation?

A point is transformed when it is moved from where it was originally to a new location. Translation, rotation, reflection, and dilation are examples of different transformations.

The original vertices of a quadrilateral are (-2,3), (4,6), (4,2), and (3, -2).

After a transformation, the new coordinates are (-1,1.5), (2,3),(2,1), and (1.5,-1).

As we know that dilation is a process for creating similar figures by changing the size.

This means that the two images are similar, as they have the same shape and size, despite having different positions and orientations in the coordinate plane.

Hence, the given transformation is a dilation that results in similar quadrilaterals by preserving angle measurements.

To learn more about the transformations click here :

https://brainly.com/question/11352944

#SPJ2

What is the lateral area of the prism? Assume the figure is resting on its base.

Answers

check the picture below.

the lateral area, namely the area of the sides, as you see in the picture, is really just the area of 6 rectangles.

front and back, two rectangles of 5x25,

left and right, two rectangles of 2x25.

simply get the area of each and sum them up, that's the lateral area of the prism.

[tex]\bf \stackrel{\textit{front and back}}{2(5\cdot 25)}~~~~+~~~~\stackrel{\textit{left and right}}{2(2\cdot 25)}[/tex]

your answer is 250 l*h*w

In a circle, a 225 degrees sector has area 490pi in2. What is the radius of the circle?

Answers

we know that

area of a sector=(∅*pi/360°)*r²--------> when ∅ is in degree
r=√[360°*(area of a sector)/(∅*pi)]

area of a sector=(∅/2)*r²--------> when ∅ is in radians
r=√[2*(area of a sector)/∅]

let's calculate the radius of the two ways

1) r=√[360°*(area of a sector)/(∅*pi)]
area of a sector=490*pi in²
∅=225°
r=√[360°*(490*pi)/(225°*pi)]-------> r=√784-----> r=28 in

2) r=√[2*(area of a sector)/∅]
area of a sector=490*pi in²
∅=225°-----> convert to radians-----> ∅=225°*pi/180-----> ∅=1.25*pi
r=√[2*(490*pi)/(1.25*pi)]----> r=√[980/1.25]---> r=√784----> r=28 in

the answer is
the radius is 28 in

2. A cube-shaped aquarium has edges that are 3 ft long. The aquarium is filled with water that has a density of 62 lb/ft^3

(a) Should the aquarium be placed on a table that can support a maximum weight of 200 lb? Explain why or why not.

(b) Would the density of the water change if the aquarium was only half full? Explain. Answer:

Answers

Total mass of the filled aquarium = 3*3 * 62 = 1674 pounds
As the table can only support 200 lbs the aquarium should not be put on the table.

(b) No the deisity of the water is a constant

(a)

3*3*3=27

27*62=1674

Your answer: 1674

(b)

No, no matter how much water there is, the density will never change.

I need help please help me!!

Answers

Find the area of the larger circle and subtract from it the area of the smaller circle. I can't tell what the diameter of the larger circle is.

Three different bags of pretzels are sold at the store. which bag of pretzels is the best buy? bag a:10 ounces for $1.10 bag b:12 ounces for $1.38 bag
c.6 ounces for $0.84

Answers

----------------------
Bag a:
----------------------
10 ounces = $1.10
1 ounce = $1.10 ÷ 10 = $0.11

----------------------
Bag b:
----------------------
12 ounces = $1.38
1 ounce = $1.38 ÷ 12 = $0.115

----------------------
Bag c:
----------------------
6 ounces = $0.84
1 ounce = $0.84 ÷ 6 = $0.14

--------------------------------------------------
Answer: Bag A is the best buy.
--------------------------------------------------

The best buy bag is bag A

Simplify the radical expression.
square root of 20
A. 2√10
B. 5√2
C. 2√5
D. 2

if anyone has the answers to the unit test let me know :)

Answers

The answer is c and in decimal form it would be 4.4727

[tex] \sqrt{20} = 2 \sqrt{5} [/tex]

Need help to write equations for 5, 6 & 7

Answers

7)
Read my note at the end of problem 5 in another post.
You already know this table represents an exponential function
since each y-coordinate is always the previous y-coordinate multiplied by 6.
That means b = 6, and you have
y = a(6)^x
Now we find "a". When x = 0, y = 5. That means a = 5.
The equation is

y = 5(6)^x

Suppose y varies directly with x and y=-25 when x=5. find y when x=3

Answers

Let y= -5(x) so that if x =5; y = -5(5) = -25; Therefore let x =3; y = -5(3) = -15

Final answer:

To solve for y when x = 3, we first determined the constant of proportionality (k) using the given values (y = -25 when x = 5). With k found to be -5, we then calculated y for x = 3 to find that y = -15.

Explanation:

The question asks us to find the value of y when x = 3 given that y varies directly with x and that y = -25 when x = 5. Because y is directly proportional to x, we can write the relationship as y = kx, where k is the constant of proportionality.

First, we solve for k:

Set up the equation based on the given information: y = kx

Substitute the known values: -25 = k(5)

Solve for k: k = -25 / 5 = -5.

Now that we have found k, we can use it to find y when x = 3:

Use the determined value of k: y = -5(3)

Multiply to find y: y = -15.

Therefore, when x = 3, y is -15.

Write the prime factorization of 18. Use exponents when appropriate and order the factors from least to greatest (for example,

2

2

3

5

).

Submit

Answers

Prime factorization is when the numbers are divided until they cannot be divided anymore.

For example, the number 18.

18/2 = 9

9/3 = 3

So the prime factorization is 2,3,3

As it says use exponents: There are 2 threes. 3 x 3 is the same as 3²

3² x 2 should be your answer

hope this helps

Final answer:

The prime factorization of 18 is 2 x 3², dividing 18 first by 2 and then by 3 twice.

Explanation:

The prime factorization of a number represents that number written as the product of its prime factors. Let's take 18 as an example. First, we will find the smallest prime number that can divide 18, which is 2. When 18 is divided by 2, the quotient is 9. Then, we continue to divide 9 by the smallest possible prime number, which is 3. We can divide 9 by 3 two more times. Therefore, the prime factorization of 18 is 2 x 3², where 2 and 3 are the prime factors and ² is an exponent indicating that 3 is a factor twice.

Learn more about Prime Factorization here:

https://brainly.com/question/33295472

#SPJ3

tan 49 = x/400
please solve

Answers

Tan 49 = x/400

Therefore, 400tan49 = x (simple algebra)

X = 460.147

What is the following quotient?

3^√60
------------
3^√20

Answers

Answer:

its 3√3 bud

Step-by-step explanation:

Answer:

Step-by-step explanation:

Brian made 5 free throws at basketball practice. ethan scored 3 more than twice the number of free throws brian made. which equation could be used to find the number of free throws, t, ethan made?

Answers

Lets Brian => b and Ethan => e so
b=5
e=3+2b
will be the equation of finding free throws.

BRAINLIESTTT ASAP!

please answer

Answers

When you add the two angles together, they should equal 90 degrees (according to the square marker). So, all you have to do is add the two angles together, make them equal to 90, and solve for x.
2x+8+5x-2=90
7x+6=90
7x=84
x=12

Now, we substitute x and solve for the angles.
2x+8
2(12)+8
32 degrees

5x-2
5(12)-2
58 degrees

To double check our answer, we can add the two angles together and see if we get 90.
32+58=90 yes

Our answer is correct

Expenses that are bi-weekly are paid twice a week twice a month every two weeks every two months

Answers

Expenses that are bi-weekly are paid every two weeks.

Answer:

Expenses that are bi-weekly are paid every two weeks.

Step-by-step explanation:

Expenses that are bi-weekly are paid every two weeks.

A bi-weekly pay schedule is the most commonly used pay period by employers. It is also called every other week pay period.

This payment method results in 26 paychecks in a year.

What is the range of the data set

2 | 1, 3, 8, 8
5 | 2, 4, 6, 6, 7
6 | 0, 1, 1

Key: 6| 0 means 60 please help i do not get this plz solve

Answers

The range is the difference between the highest and lowest values.
The highest value is 61.
The lowest value is 21.

range = highest value - lowest value = 61 - 21 = 40

NEED HELP PLEASE I BEG!!!!!!
The results of a survey indicate that between 76% and 84% of the season ticket holders are satisfied with their seat locations.

What is the survey’s margin of error?

Enter your answer in the box. ± ___ %
The answer goes on the underscores

Answers

The confidence interval estimator of the population proportion is given by

[tex]C.I.=\hat{p}\pm M.E.[/tex]

where: [tex]\hat{p}[/tex] is the sample proportion, which is midway between the two intervals and M.E. is the margin of error which is the difference between each of the intervals and the sample proportion.

i.e.
[tex]\hat{p}= \frac{76+84}{2} \% \\ \\ = \frac{160}{2} \%=80\%[/tex]

Therefore, the margin of error is 4%.

Final answer:

The margin of error for the survey, given a range between 76% and 84% satisfaction for seat locations, is calculated to be ±4%.

Explanation:

The margin of error in a survey indicates how much the survey results might differ from the actual opinions of the total population.

In this case, the survey indicates a satisfaction range between 76% and 84% for seat locations among season ticket holders.

The margin of error is half of the width of the range, which is the difference between the upper and lower percentage bounds of the confidence interval divided by two.

To calculate the margin of error, subtract the lower percentage (76%) from the upper percentage (84%) and then divide by 2. That is, (84 - 76) / 2 = 8 / 2 = 4.

Thus, the margin of error for the survey is ±4%.

A radio tower casts a shadow of 8.2 ft long and a 36-inches and a fourth-grader walking home cast a shadow of 1.5 inches. How tall is the radio tower?

Answers

Answer: 196.8

Step-by-step explanation:

Start off by reading the problem.

A radio tower casts a shadow of 8.2 ft long and a 36-inches and a fourth-grader walking home cast a shadow of 1.5 inches. How tall is the radio tower?

Then take what you know from the problem and put it in a fraction looking thing:

like this:

1.5 8.2

__ = __

36 x

So after you've done this you will want to:

Multiply 36 x 8.2 = 295.2

take 295.2 then Divide by 1.5

=196.8

Answer:

196.8

Step-by-step explanation:

What is the length of segment CE if AE = 15 inches and ED = 5 inches and EB = 3 inches?

A. 45 inches
B. 9 inches
C. 15 inches
D. 14 inches

Answers

We have to determine the length of segment CE if AE = 15 inches and ED = 5 inches and EB = 3 inches.

Since ,we can observe that AB and CD are chords intersecting at point E.

Therefore, by intersecting chord theorem which states:

" When two chords intersect each other inside a circle, the products of their segments are equal"

So, [tex] AE \times EB= CE \times ED [/tex]

[tex] 15 \times 3= CE \times 5 [/tex]

[tex] 45= CE \times 5 [/tex]

[tex] CE = \frac{45}{5} [/tex]

CE = 9 inches.

So, the measure of segment CE is 9 inches.

So, Option B is the correct answer.

Other Questions

Which region of the united states was the center of the nation's agricultural production in the early 1800's?a.the westb.the northc.the southd.the mid-atlantic? two concepts in the Mayflower Compact that influenced the founding fathers When heat flows into a system its value is _ when heat flows out of a system its value is negative A 20-year-old male is hospitalized with a 4-day history of cough and a temperature of 41c. chest sounds are dull to percussion. a sputum gram stain is non-diagnostic. a blood culture is positive for gram-positive cocci in pairs. the recommended treatment is with __________. What is the apparent solution to the system of equations? y= -2x +3, y=1/3x - 4. Graph the system of eqiations Comparison contrast the miracle worker movie and the play The Pardah Nashin by Sarojini Naidu Sarojini Naidu was an Indian poet and activist. Known as the "Nightingale of India," she advocated for India's independence, social welfare, and equal rights. The Pardah is a religious and social practice of seclusion in some Hindu or Muslim communities of South Asia. Women are either physically separated from males using separate buildings, screens, walls, or curtains, or they may be concealed by loose clothing and veils. Her life is a revolving dream Of languid and sequestered ease; Her girdles and her fillets gleam Like changing fires on sunset seas; Her raiment is like morning mist, Shot opal, gold and amethyst. From thieving light of eyes impure, From coveting sun or wind's caress, Her days are guarded and secure Behind her carven lattices, Like jewels in a turbaned crest, Like secrets in a lover's breast. But though no hand unsanctioned dares Unveil the mysteries of her grace, Time lifts the curtain unawares, And Sorrow looks into her face . . . Who shall prevent the subtle years, Or shield a woman's eyes from tears? What is the central idea of this poem? A.)Religious customs, like the Pardah, lead to happiness. B.) Women must be free in order to realize true happiness. C.)No one can escape the sorrow caused by the passage of time. D.)When protected, women are free to realize their full potential. There are five students of different ages. Their median age is 13 years A) what are two possibilities for the ages of the three oldest students? B) if each student is a different age, how many students must be younger than 13? C) in complete sentences, describe what a median is to another student in the class. Pretend that the student was absent the day you learned about medians. Mr. Grayson owns a wood company that sells trees, wood materials, and specialty items created from wood. (Score for Question 1: ___ of 4 points) 1.One of Mr. Graysons customers, Zenani, is creating an art wall on which she will display some art in triangular frames. She wants three frames, each in the shape of a right triangle. (a)For the first frame, Zenani already has two wooden pieces that are 13 in. and 16 in. long. Zenani says that since she wants the frame to be a right triangle, theres only one possible measurement for the last piece of wood. Is Zenani right? If so, what is that last measurement? If not, explain why not and give all possible measurements for the last wood piece. Round to the nearest tenth. (b)For the second frame, Zenani asks Mr. Grayson to double the measurements of the first triangular frame to make a new frame in the shape of a right triangle. Will Zenanis strategy work for the second frame? Explain why or why not. (c)For the third frame, Zenani asks Mr. Grayson to add the same measurement to each of the sides of the original triangle frame to make a new frame in the shape of a right triangle. Will Zenanis strategy work for the third frame? Explain why or why not. Answer: (Score for Question 2: ___ of 4 points) 2.Mr. Grayson gets a request from a customer to buy a palm tree of a specific height. Mr. Graysons tree nursery is very large and is organized by a coordinate plane map system. He finds a palm tree that he thinks might meet the customers specifications. The tree is located at coordinates . He calls his assistant to come over to help him determine the height of the tree. He asks his assistant where shes located. His assistant says she is located at . Each unit on the coordinate grid represents 1 ft. How far is Mr. Graysons assistant from the tree? Round to the nearest tenth. Show your work. Answer: (Score for Question 3: ___ of 3 points) 3.Mr. Grayson orders a box that has a volume of . The box is in the shape of a cube. What is the longest stick that can fit in the box? Round your answers to the nearest whole number. Answer: Please answer All of the questions to get the points Mary Alice is trying to answer the question. How many siblings does each member of her 30 person Biology class have. What is the best way to determine this? A) Take a sample of 10 members of the class and then find the mean of the responses. B) Survey each member of her 30 person class to determine how many siblings each person has. C) Take a survey from the entire school and then look at the responses from students in a Biology class. D) Look at the school enrollment roster to see how many siblings each member of the class has at the school. Question 5 UnsavedWhat is the equation for the sum of four consecutive numbers totaling 86.Question 5 options:4n=86n+4=86n+n+1+n+2+n+3=86n+n+2+n++4+n+6=86 A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. how should the organism be represented in the food web?a. the organism must have an arrow pointing from it to a tertiary consumer and another arrow pointed from it to a decomposer.b. the organism must have an arrow pointing from it to a secondary consumer and another arrow pointing to it from the top predator.c. the organism must have an arrow pointing to it from a producer and another arrow pointing to it from a primary consumer.d. the organism must have an arrow pointing from it to primary consumer and another arrow pointing away from it to a decomposer. Can undiagnosed severe iron deficiency anemia cause harm to cognitive ability Los trenes locales hacen muchas ___________. a. paradas c. coche-camas b. revisores d. vas You have users who need to do some programming projects in the ruby programming language hey can you please help me posted picture of question what is the next number in this pattern 0.54,0.6,0.66,0.72 Find the slope and y-intercept fotv Brittany loves the rush she gets after a couple of shots of vodka. brittany's motive for drinking would be characterized as Mind helping someone out? I've kinda been stuck on this problem and it's my last math problem for the day.