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A Consumer Product Magazine Recently Ran a Story Concerning the Increasing

question 71

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

$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 $n = 22$ large enough to utilize the central limit theorem in this inferential procedure?

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Definitions:

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