Question

Choose the inference method that would be most appropriate to answer the following questions. Write the correct letter on the line next to each question’s number.

A. Confidence Interval B. Significance test C. No need for inference

_______ Part 1) Is there evidence of an association in the population between season and color of clothes people wear?

_______ Part 2) What is the proportion of people who buy life insurance in the US?

_______ Part 3) What is the mean price of the 55 previously owned cars a

Answer 1

Part 1) Since, we want to find the evidence of an association

in the population between season and color of clothes, we

should go for test of significance. Hence, Option (B) is the

correct choice for this case. (Ans).

Part 2) If we want to get the proportion of people who buy

life insurance in the US, we should obtain a confidence interval

of the proportion. Hence, Option (A) is the correct choice for

this case. (Ans).

Part 3) There is nothing to infer from the given information.

(Ans).