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A Consumer Product Magazine Recently Ran a Story Concerning the Increasing

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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: μ=215\mu = 215
Alternative Hyp: μ>215\mu > 215

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

Cases Included 22

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


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