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A survey of the mean number of cents off that coupons give was conducted by randomly...

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Basic Math

A survey of the mean number of cents off that coupons give wasconducted by randomly surveying one coupon per page from the couponsections of a recent San Jose Mercury News. The following data werecollected: 20¢; 75¢; 50¢; 65¢; 30¢; 55¢; 40¢; 40¢; 30¢; 55¢; $1.50;40¢; 65¢; 40¢. Assume the underlying distribution is approximatelynormal.

Construct a 95% confidence interval for the population meanworth of coupons.  Use a critical value of 2.16 from thet distribution.

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Solutionxx220400755625502500654225309005530254016004016003090055302515225401600654225401600x6065x23122725The sample    See Answer
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