Mathematics

Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below. A woman is selected by a marketing company to participate in a paid focus group. The company says that the woman was selected because everyone in five randomly selected towns was being selected. Which type of sampling did the marketing company use? A) Stratified sampling B) Systematic sampling C) Random sampling D) Convenience sampling E) Cluster sampling
2 Answers
What is the probability that a randomly chosen positive factor of 72 is less than 10?andA list consists of all possible three-letter arrangements formed by using the letters A, B, C, D, E, F, G, H such that the first letter is D and either the second or third letter is A. If no letter is used more than once in an arrangement and one three-letter arrangement is randomly selected from the list, what is the probability that the arrangement selected will be DCA?
1 Answer
Find the Derived Function
1 Answer
evaluate cos(tan^-1(4)). Can someone help me for this one? I kinda confused. Please ASAP!!!!
1 Answer
determine whether the realtionship between the circumference of a circle and its diameter is a direct variation. if so, identify the constant of porportionatlity. justify your response
1 Answer
5x6+(5+7) = please help
2 Answers
The tree diagram represents an experiment consisting of two trials.P(A and C) = [?]
2 Answers
There are 170170170 deer on a reservation. The deer population is increasing at a rate of 30%30%30, percent per year.Write a function that gives the deer populationP(t)P(t)P, left parenthesis, t, right parenthesis on the reservation ttt years from now.
2 Answers
Which line segment is a radius of circle F?A FABBEAC
1 Answer
Suppose triangle DEF = triangle WXY. Which choice below shows corresponding parts to congruent triangles that are congruent? Explain your answer. (A) angle E = angle X; DF = XY (B) angle D = angle Y; EF = XY ( C) angle E = angle X; DF = XY; (D) angle F = angle X; DE = WX
1 Answer
For this right triangle shown, what is the sine of angle C?A)157B)158C)177D)178E)78
2 Answers
Suppose that diastolic blood pressure readings of adult males have a bell-shaped distribution with a mean of 84 mmHg and a standard deviation of 9 mmHg. Using the empirical rule, what percentage of adult males have diastolic blood pressure readings that are greater than 102 mmHg? Please do not round your answer.
2 Answers
In a certain chemical, the ratio of zinc to copper is 3 to 11. A jar of the chemical contains 473 grams of copper. How many grams of zinc does it contain?
1 Answer
Jordy looked at a package of M&M's.He realized 1/3 of the M&M's is blue 1/4 were red and 1/8 were yellow. What color M&M's did Jordy have the most?
1 Answer
5 friends want to share 2 pizzas. Each friend wants and equal amount. How much pizza does each friend get? Group of answer choices A.2/5 B.5/2 C.1/5 D.2/10
2 Answers
Consider this change to that situation. You charge the balls so that they hang a distance r apart. Then you step out to get a drink of water, and when you return, you find the distance between the pith balls is half what it was before you got a drink. In terms of the length L, the charge Q, and the original angle , find the new charge on the pith balls and the new angle at which they hang. To receive credit, you must show your work. (10 pts each)
1 Answer
Let f ( x ) = x 2 + 6 x + 6 f ( x ) = x 2 + 6 x + 6 , and g ( x ) = 1 g ( x ) = 1 . Find all values for the variable x x , for which f ( x ) = g ( x ) f ( x ) = g ( x ) .
2 Answers
What is 1,356 divided by 8 equal?
2 Answers
Sonya, who is paid time and a half for hours worked in excess of 40 hours, had gross weekly wages $725 for 52 hours worked. What is her regular hourly rate?
2 Answers
A particle moves along a straight line and its position at time t is given by s(t)=t4?7t+22,t?0. where s is measured in feet and t in seconds.(A) Find the velocity at time t: (B) Find the velocity (in ft/sec) of the particle at time t=3. (C) Find all values of t for which the particle is at rest. (If there are no such values, enter none . If there are more than one value, list them separated by commas.)t = (D) Use interval notation to indicate when the particle is moving in the positive direction. (If needed, enter inf for ?. If the particle is never moving in the positive direction, enter none .) (E) Find the total distance traveled during the first 8 seconds.
2 Answers
How do I solve for the missing lengths?
1 Answer
What are the steps to solving -1.56+.73
1 Answer
Find the sum of the first seven terms of the sequence 4, 12, 36, 108
2 Answers
The number of CDs sold in 2010 was 114 million, down from 147 million the previous year. What is the absolute and relative (percent) decrease?
1 Answer