1. A simple random sample of prices (in $) for a particular type of basketball shoe from 16 department stores in Columbus is shown below:

95, 108, 97, 112, 99, 106, 105, 100, 99, 98, 104, 110, 107, 111, 103, 110.

Assume that the prices of the basketball shoe follow a normal distribution.Find the 95%confidence interval.

2. In a survey of 517 franchise owners of Torchie's Tacos, 403 said that the corporate commercial aired during the Super Bowl increased sales in the month following its debut. Find the 95% confidence interval.

3. We plan to sample music teachers in order to construct a 95% confidence interval for the proportion who believe that listening to hip-hop music has a positive effect on music education. We have no value of available. Estimate the sample size needed so that a 95% confidence interval will have a margin of error of 0.03.

A.	(101.32, 106.68)
B.	(101.09, 106.91)
C.	(.744, .815)
D.	1067 teachers
E.	1068 teachers