Question

A study on the personality characteristics of drug dealers sampled 100 convicted drug dealers and scored them each on the Wanting Recognition​ (WR) Scale, which provides a quantitative measure of a​ person's need for approval and sensitivity to social situations.​ (Higher scores indicate a greater need for​ approval.) The sample of drug dealers had a mean WR score of 38​, with a standard deviation of 6. Use this information to find an interval estimate of the mean WR score for all convicted drug dealers. Use a confidence level of 90​%. Interpret the result.

Construct a 90% confidence interval and choose one of the following.

A. The 90% confidence interval for mean WR score indicates that 90% of convicted drug dealers have a WR score between _______ and ________.

B. The 90% confidence interval for mean WR score indicates that the true mean WR score for convicted drug dealers is between _______ and ________ with 90% confidence.

C. The 90% confidence interval for mean WR score indicates that 90% of all drug dealers have a WR score between _______ and ________.

D. The 90% confidence interval for mean WR score indicates that the true mean WR score for all drug dealers is between _______ and ________ with 90% confidence

Answer 1