What does it mean to say that the confidence interval methods of this section are robust against departures from​ normality?

Answers

Answer 1
The confidence interval methods for the mean are robust against departures from​ normality, meaning they work well with distributions that​ aren't normal, provided that departures from normality are not too extreme.

Related Questions

Consider the function f (x) = (2x - a)(x - b)/5(x - b)(x - c). Determine where the following features of its graph
are located in terms of a, b, and/or c. Explain your reasoning for each situation.
a. the x-intercepts
b. the y-intercepts
c. any vertical asymptotes
d. any horizontal asymptotes
e. any “holes” in the graph

Answers

a) The function simplifies to
.. f(x) = (2x -a)/(5(x -c)) . . . . . . x ≠ b
The x-intercept will be located where f(x) = 0, at x = a/2.

b) The y-intercept is located where x = 0, at f(0) = a/(5c)

c) The vertical asymptote is where the denominator is zero, at x = c

d) The horizontal asymptote is the value that results when x gets large, y = 2/5.

e) There is a "hole" in the graph at x=b, where the function is undefined.

Explain how to find the degree of a polynomial.

Answers

The degree of a polynomial is the highest number as an exponent in a term, for example, 5x^3+5x^2, 3 is the degree. To find it, you need to either just find the highest number or add up multiple degrees in one term. An example of this is 5x^3y^3+4x^3y^2. Since 3+3=6 and 3+2=5, the first term has the highest degree.

Answer:

The Degree of a Polynomial is the largest of the degrees of the individual terms. Add the degrees of the variables of each term to decide what is the Degree of the Polynomial. Degree of term 1 is 2 (1+1= 2), Degree of term 2 is 6 (2+4 = 6), Degree of term 3 is 7 (5+2 = 7) 7 is the Degree of the Polynomial.

Triangle ABC has vertices at A(3, 8) , B(11, 8) , and C(7, 12) . Triangle FGH has vertices at F(8, 4) , G(16, 4) , and H(12, 8) . Which sequence of transformations shows that triangle ABC and triangle FGH are congruent? Select each correct answer. Translate ​ triangle ABC ​ down 4 units, and then translate ​ triangle ABC right 5 units. Translate ​ triangle FGH ​ down 4 units, and then translate ​ triangle FGH ​ left 5 units. ​ Translate ​ triangle FGH ​ up 4 units, and then translate ​ triangle FGH ​ left 5 units. ​ Translate ​ triangle ABC ​ down 4 units, and then translate ​ triangle ABC ​ left 5 units.

Answers

vertices of ΔABC 
A - (3, 8)
B - (11, 8)
C - (7, 12)
vertices  of ΔFGH
F - (8, 4)
G - (16, 4)
H - (12, 8) 
after a translation the size nor shape of the triangle changes, every point of the triangle moves the same distance in the same direction. 
if we take point A and F
x coordinates of A = 3 and F = 8
the change that has happened can be noted as 'm'
3 + m = 8
m = 5
this means that the point has moved 5 units to the right
y coordinates of A = 8 and F = 4
change that happened is 'n'
8 + n = 4
n = -4
this means that point has moved 4 units downwards

Therefore the correct answer is Translate ​ triangle ABC ​ down 4 units, and then translate ​ triangle ABC right 5 units

This the answer hope it helps!!

If dewayne answered 38 items correctly on a test, and received a score of 76%, How Many items were on the test?

Answers

The answer is 50 questions 

simple interest = P × r × t

Joe borrowed $900 from Sam for six months. How much will Sam earn if he charges Joe a simple interest rate of 4 percent?

Answers

700 times 2 is right nothing besides that makes sense 

Answer:

$18.

Step-by-step explanation:

We have been given that Joe borrowed $900 from Sam for six months. The interest rate charged by Sam is 4%.

We will use Simple interest formula to solve our given problem.

[tex]I=PrT[/tex], where,

[tex]I=\text{Simple interest}[/tex],

[tex]P=\text{Principal amount}[/tex],

[tex]r=\text{Interest rate in decimal form}[/tex],

[tex]T=\text{Time in years}[/tex].

Let us convert our given rate in decimal form.

[tex]4\%=\frac{4}{100}=0.04[/tex]

12 months = 1 year.

1 month = 1/12 year.

6 months = 6/12 year = 1/2 year = 0.5 year.

Upon substituting our given values in simple interest formula we will get,

[tex]I=900*0.04*0.5[/tex]

[tex]I=900*0.02[/tex]

[tex]I=18[/tex]

Therefore, Sam will earn $18 if he charge Joe a simple interest rate of 4 percent.

The histogram below shows the age distribution of Elizabeth’s grandchildren.

The box-and-whisker plot below shows the same data.

Which of the following best explains why one graph appears skewed and one graph appears symmetric?

A. The intervals on the x-adis of the histogram are too large

B. The interval on the y-axis of the histogram is too small

C. The interval on the x-axis of the histogram is inconsistent

D. The interval in the box-and-whisker plot is too small

Answers

С.

I hope helped`` ^-^

Answer:

Option: C is the correct answer.

C. The interval on the x-axis of the histogram is inconsistent

Step-by-step explanation:

Clearly after looking at the histogram we see that the interval on the x-axis are inconsistent.

Since, the intervals given are:

0-4    ( length of interval is 4)

5-9    ( length of interval is 4)

10-14   ( length of interval is 4)

But the intervals:

(15-19) is missing in the given histogram.

And then a interval of length 4 is given i.e. (20-24)

Hence, option: C is the correct answer.

The length of a rectangle is 2 ft longer than its width. if the perimeter of the rectangle is 32 ft , find its area.

Answers

The length of would be 9 and the width 7, resulting in an area of 63

Final answer:

To find the area of the rectangle, first solve for the width using the perimeter formula. The width is found to be 7 ft. Then calculate the length as w + 2, which is 9 ft. The area is the product of length and width, resulting in 63 square feet.

Explanation:

To solve this problem, we need to set up equations based on the information given about the rectangle's dimensions and the perimeter.

Step 1: Define Variables

Let w be the width of the rectangle in feet. Consequently, the length l will be w + 2 feet, since the length is 2 feet longer than the width.

Step 2: Perimeter Equation

The perimeter (P) of a rectangle is given by 2(l + w). We can use the perimeter given (32 ft) to create an equation: 2(w + w + 2) = 32.

Step 3: Solve for w

Combine like terms and divide both sides by 2 to find w:
4w + 4 = 32
w = 7 ft.

Step 4: Find l

The length is w + 2, which is 7 ft + 2 ft = 9 ft.

Step 5: Calculate Area

The area of a rectangle is l × w. Therefore, the area is 9 ft × 7 ft = 63 square feet.

Sam cut a flat wooden board into fourths. He used three of the pieces as backgrounds for posters. He used equal pieces of the leftover board as backgrounds for 5 photos. What fraction of the original board did he use for each photo background? Enter your answer in the boxes.

Answers

To answer this question you would start with 1 whole piece and break it into 4 equal pieces. Each piece would be 1/4 of the original.

If you used 3 of these, you are left with 1/4.

Out of the 1/4 leftover, you create 5 equal-sized pieces.

1/4 divided by 5.
1/4 x 1/5 = 1/20 of the original board for each.

A bowl of fruit contains 3 apples, 4 bananas, 2 pears and 1 orange.Aminata chooses one piece of fruit at random.What is the probability that she chooses.

Answers

Final answer:

The probability of Aminata choosing a specific type of fruit is calculated by dividing the number of that fruit by the total number of fruits in the bowl. Different fruit types have different probabilities due to their varying quantities.

Explanation:

The question asks about the probability of Aminata choosing a specific type of fruit from a bowl containing 3 apples, 4 bananas, 2 pears, and 1 orange. To find the probability of Aminata choosing any one type of fruit, we first need to determine the total number of fruit pieces in the bowl, which is 3 apples + 4 bananas + 2 pears + 1 orange = 10 pieces of fruit.

The probability of selecting any specific type of fruit is then calculated by dividing the number of that fruit type by the total number of pieces.

The probability of choosing an apple is 3/10.The probability of choosing a banana is 4/10 or simplified to 2/5.The probability of choosing a pear is 2/10 or simplified to 1/5.The probability of choosing an orange is 1/10.

Each fruit type has a different probability of being chosen based on its quantity in the total mix of fruits.

Arnold's company reimburses his expenses on food, lodging, and conveyance during business trips. The company pays $40 a day for food and lodging and $0.50 for each mile traveled. Arnold drove 400 miles and was reimbursed $2600. Part A: Create an equation that will determine the number of days x on the trip (3 points) Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points) Part C: How many days did Arnold spend on this trip? (1 points)

Answers

We know for the problem that Arnold drove 400 miles during his business trip, and the cost of each mile is $0.50, so the total cost of the miles the company will reimburse is: [tex](400)(0.5)=200[/tex]$. 

Part A. We now know that the total cost  of the miles the company have to pay to Arnold is $200. We also know the company pays him $40 a day for food and lodging. So let [tex]x[/tex] represent the number of days of Arnold's business trip:
[tex]y=40x+200[/tex]
where
[tex]y[/tex] is the amount the company will reimburse Arnold after [tex]x[/tex] days.
[tex]x[/tex] is the number of days.

Part B. We know that the amount the company will reimburse Arnold is $2600, so [tex]y=2600[/tex]. Lets replace that value in our equation and solve for [tex]x[/tex] to find the number of days:
[tex]y=40x+200[/tex]
[tex]2600=40x+200[/tex]
The first thing we are going to do to solve our equation is subtract 200 to both sides using the subtraction property of equality:
[tex]2600-200=40x+200-200[/tex]
[tex]2400=40x[/tex]
Next, we are going to divide both sides of the equation by 40, using the division property of equality, to find the value of [tex]x[/tex]:
[tex] \frac{2400}{40} = \frac{40x}{40} [/tex]
[tex]60=x[/tex]
Finally, we can use the reflexive property  of equality to get:
[tex]x=60[/tex]

Part C. We can conclude that Arnold spend 60 days in his business trip.

What Is The Value Of n So That The Expression
X² + 12 x + n Is A Perfect Square Trinomial ?
( 1 Point )

A . 36
B . 36
C . 72
D . 144,

Answers

36 because x^2 + 12x + 36 = ( x + 6 )^2 is a perfect square trinomial;

Given is the expression, x² + 12x + n

It says to find value of 'n' that converts it into a Perfect Square Trinomial.

A perfect square trinomial is a quadratic expression which has a single root with multiplicity 2. i.e. it is of the form :- x² + 2bx + b² = (x + b)²

On comparing it with the given expression, we get :-

So 2b = 12 and n = b²

b = 6

and so b² = 6² = 36.

⇒ n = 36

Hence, x² + 12x + 36 = (x + 6)² i.e. n = 36 is the final answer.

please help asap!!! brainliest to best/right answer!!!!!!

Answers

The answer is C, I hope this helps!

The amplitude of y = -3sin(x) is _____.

Answers

Amplitude: A=Absolute vaule (-3)
Amplitude: A = 3
y = -3sin (x)
 For this case what you can do are two methods to find the amplitude. 
 Method 1:
 Graph the function to see the zero-peak behavior of the function.
 Method 2:
 A = absolute value (-3)
 A = 3
 Note:
 Using method 1 we see that the zero-peak amplitude is 3.
 Answer:
 A = 3

A cell phone plan charges $15$15 per month for 300300 text messages. The plan charges $0.08$0.08 for each additional text message. You use 6060 additional texts this month. What is your bill for the month?

Answers

The company charges 15 dollars per month for first 300 text messages and thereafter 0.08 dollars for any additional text message.

It says that we used additional 60 text messages (after fair usage of first 300 messages in the plan).

Our bill for this month would be sum of charges for 300 messages and charges for additional 60 messages.

Total bill = 15 dollars + 60x0.08 dollars = (15 + 4.80) dollars.

Total bill = 19.80 dollars.

Hence, our bill this month would be 19.80 dollars.

Find the volume of a cone?

Answers

Cone Volume = (PI * radius^2 * height) / 3

The volume of a cone is (1/3)(the area of the base)(slant height).
---
Hope this helps!

the hoop rotates through qan angle of 3/2 pie radian in 1 second how many revolutions does the hoop make in 1 minute

Answers

a revolution is a full go-around the circle, namely a 2π angle, as opposed to pie, but yours sounds more delicious.

so, we know it does 3/2 π in 1 second, how many π does it do in 60 seconds(1 minute) ?

[tex]\bf \begin{array}{ccll} radians&seconds\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ \frac{3\pi }{2}&1\\\\ r&60 \end{array}\implies \cfrac{\frac{3\pi }{2}}{r}=\cfrac{1}{60}\implies \cfrac{\frac{3\pi }{2}}{\frac{r}{1}}=\cfrac{1}{60}[/tex]

[tex]\bf \cfrac{3\pi }{2}\cdot \cfrac{1}{r}=\cfrac{1}{60}\implies \cfrac{3\pi }{2r}=\cfrac{1}{60}\implies \cfrac{3\pi \cdot 60}{2}=r\implies 90\pi =r\\\\ -------------------------------\\\\ \textit{how many times }2\pi \textit{ goes into }90\pi ?\qquad \cfrac{90\pi }{2\pi }\implies 45[/tex]


List the first five terms of each of the following geometric sequence.

A_1 = 10; r = 5

Answers

10, 50, 250, 1250, 6250

Help Please

Tamara needs to buy motor oil to fill the 3 empty cylindrical barrels at her oil service center each barrel is 7 ft deep and has a radius of 4 ft what is the volume of oil needed use 3.14 for the radius.

Answers

the answer is seven times 4 times three and then you will get your answer

Answer:

1055.04 volume

Step-by-step explanation:

how is the graph of y=-1/2(5)^x-3 translated from the graph of y=1/2(5)^x

Answers

The transformation of [tex]y = -\frac12(5)^{x-3[/tex] to [tex]y = \frac12(5)^{x[/tex] is reflection across the x-axis followed by a shift to the left by 3 units

Describing the transformation of f(x) to g(x).

From the question, we have the following parameters that can be used in our computation:

[tex]y = -\frac12(5)^{x-3[/tex]

[tex]y = \frac12(5)^{x[/tex]

Rewrite them as

[tex]f(x) = -\frac12(5)^{x-3[/tex]

[tex]g(x) = \frac12(5)^{x[/tex]

From the above, we have that

f(x) is first reflected across the x-axis

This is represented by the loss of negative factor in g(x)

Then f(x) is shifted left by 3 units

This is represented by the loss of -3 in g(x)

Hence, the transformation of f(x) to g(x) is reflection across the x-axis followed by a shift to the left by 3 units

Jenna is a professional typist.she can type 22,500 words in 5 hours of typing.in one hour how many words can she type?in one minute how many words can she types?

Answers

In addition you have answer :)

PLEASE HELP ASAAAAAPPPP

Answers

equation = y = 9800 * 1.02^x

y = 9800 * 1.02^7 = 11257

 Answer is 2nd choice

John wants to build a corral next to his barn. He has 300 feet of fencing to enclose three sides of his rectangular yard.
a. What is the largest area that can be enclosed?
b. What dimensions will result in the largest yard?

Answers

Let's first define the variables:
 x = width
 300 - 2x = long
 The area will be:
 A = (x) * (300 - 2x)
 A = 300x - 2x²
 We look for the maximum area, for this, we derive:
 A '= 300 - 4x
 We match zero:
 0 = 300 - 4x
 x = 300/4 = 75
 Therefore, the width is:
 x = 75 feet
 The length is:
 300 - 2x = 300 - 2 (75) = 300-150
 150 feet
 Answer:
 Part A:
 
The maximum area will be:
 
A = (150) * (75) = 11250 square feet
 
Part B:
 
The dimensions are:
 
Length = 150 feet
 width = 75 feet

Bryan is paid $32 per hour and works 8 hours per day. He receives one paid day off for each 16 days that he works. What is his true hourly wage?

A. $40 per hour
B. $34 per hour
C. $32 per hour
D. $48 per hour

Answers

I am taking the test the answer is B $34 hope this helps

$40 per hour is his true hourly wage, option A is correct.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

Bryan works 8 hours per day, so he works 16 x 8 = 128 hours during the 16-day period.

His pay for the 16-day period is 16 x 8 x $32 = $5,120.

He receives one paid day off for each 16 days that he works, so he gets 16/1 = 16 paid days off for every 16 days worked.

Therefore, he actually works for 16 - 16/1 = 0 days during those 16 days.

His true hourly wage is his total pay divided by the actual number of hours he works:

True hourly wage = $5,120 / 128 hours = $40 per hour

Hence,  $40 per hour is his true hourly wage, option A is correct.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ5

Please help me out! :)

Answers

The area for that Equilateral triangle is 110.851
if you round it, you get 110.9

Medal to correct answer!!
A game of "Doubles-Doubles" is played with two dice. If a player rolls doubles, the player earns 3 points and gets another roll. If the player rolls doubles again, the player earns 9 more points. How many points should the player lose for not rolling doubles in order to make this a fair game?

3/5
27/35
9/10
1

Answers

The answer is 27/35.
The probabilities are the following:
one double= 5/36
two doubles =1/36
no doubles = 1/6 

The formula will be,
12/36 + 5[(3-x)/36] - (5)(x/6) = 0
x=27/35
Answer:

The answer will be 27/35

Step-by-step explanation:

Probability is the number of outcomes out of total outcomes present or  the extent to which something is likely to happen. In the given problem there are two dices which means there are total 36 outcomes because each dice has 6 sides. So the probability of the given case will be

Probability of getting two doubles on both dice = 1/36

Probability of getting just one double = 5/36

Similarly

Probability of getting no doubles on both dice is = 5/6.  

So in order to find the probability we add the products of the probabilities and solve:

12/36 + 5*(3-x)/36 - 5*x/6 = 0

x = 27/35


Which simply means the player should lose 27/35 points for not rolling a double.

Which rigid transformation does NOT result in a reversed orientation of the original image? Justify your answer

Answers

A reflection. That is because when reflecting an image you use a line of reflection, so basically a mirror image has been created so the orientation doesn't change.

Hope that helped :)

D) T(x,y) = (x, y - 2); The transformation slides the original image a given distance in a given direction. Is the CORRECT answer

Megan predicts she will sell 42 glasses of lemonade this weekend. If Megan actually sold 58 glasses of lemonade, what was Megan's percent error? Round your answer to the nearest tenth of a percent.

Answers

Megan's percent error is approximately 27.6%.

Megan's percent error can be calculated by finding the absolute difference between her predicted value and actual value, dividing that by the actual value, and then multiplying by 100 to get a percentage.

Calculate the absolute difference:

|58 - 42| = 16.

Find the percent error:

(16 / 58) × 100 ≈ 27.6%.

1. Suppose that the amount of algae in a pond triples every 2 hours. If the pond initially contains 80 pounds of algae, how much algae will be in the pond after 8 hours? (1 point)
a) 720
b) 1,280
c) 6,480
d) 320

Answers

Initially = 80 pounds

It triples every 2 hours

2 hours later = 3(80)
4 hours later = 3(3(80)))
6 hours later = 3(3(3(80)))
8 hours later = 3(3(3(3(3(80)))))
8 hours later = [tex] 3^{4} [/tex] x 80
8 hours later = 6480 (Answer C)

OR 

We find the number of 2 hours period in that 8 hours
8 ÷ 2 = 4 
It starts at 80 pounds
It tripes every 2 hours
Total algae = [tex] 3^{4} [/tex] x 80 = 6480 (Answer C)


If it triples every 2 hours, it will triple 4 times. 80x3x3x3x4=6480

to compute how one currency compared to another you must use the

1. negotiated rate
2.exchange rate
3. agreement rate
or 4.bartered rate

im guessing its the exchange rate right ?,

Answers

Yes, this is the exchange rate. If, for example, you wanted to compare the relative value for british pounds to US dollars, you would find the exchange rate online or on one of the business TV channels

HELP!!! Which of the following completes the statements of proof?

Answers

Angles 1 and 2 :)

Also:
angle 3=angle 1
angle 3+angle 4 = 180 degrees
angle 1+angle 4 = 180 degrees
i think it might be A
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