Problem 2 (8 points) Write True or False after each of the following statements.
1. For the two variables: depth of tire tread and number of miles driven on the tires, we expect the
association to be negative.
2. We wish to determine if the weekly Grocery bill changes based on the Number of family members.
The explanatory variable is Grocery bill, and the response variable is Number of family members.
3. Suppose that the original sample is: 12, 15, 15, 15, 28, 49.
The following values constitute a possible bootstrap sample: 12, 12, 12, 15, 28, 49
4. The margin of error of the confidence interval CI = (10, 40) is equal to 15.
Problem 3 (12 points) Write the letter in front of the best answer after each of the following questions.
1. A study was designed to answer the following question: How much difference is there in the
mean protein level between organic and non-organic eggs sold at HEB? Give the notation for
the parameter of interest.
A. ?1 − ?2 B. ?̂1 − ?̂2 C. µ1 − µ2 D. ?̅1 − ?̅2 E. ?1 − ?2 F. ?1 − ?2
2. The points on a scatterplot lie very close to the line whose equation is y = 4 − 3x.
The correlation between x and y is close to:
A. –1 B. 0 C. 1 D. –3

DETAILED ASSIGNMENT

20210310022358test2_1_