A Consumer Product Magazine Recently Ran a Story Concerning the Increasing

Multiple Choice

A consumer product magazine recently ran a story concerning the increasing prices of digital cameras. The story stated that digital camera prices dipped a couple of years ago, but now are beginning to increase in price because of added features. According to the story, the average price of all digital cameras a couple of years ago was $215.00. A random sample of cameras was recently taken and entered into a spreadsheet. It was desired to test to determine if that average price of all digital cameras is now more than $215.00. The information was entered into a spreadsheet and the following printout was obtained: One-Sample T Test
Null Hypothesis: $\mu = 215$
Alternative Hyp: $\mu > 215$


Cases Included 22 Is a sample size n = 22 large enough to utilize the central limit theorem in this inferential procedure?

A) Yes, since both np and nq are greater than or equal to 15
B) No, since n < 30
C) No, since either np or nq is less than 15
D) Yes, since the central limit theorem works whenever means are used