Mathematics, 06.09.2020 05:01 BaileyElizabethRay
A simple random sample of 12 iPhone's being sold over the Internet had the
following prices, in dollars.
287, 311, 262, 392, 313, 314, 257, 316, 286, 255, 283, 291
Assume that it is reasonable to believe that the population is approximately normal
and the population standard deviation is 56. What is the upper bound of the 95%
confidence interval for the mean price for all phones of this type?
Round your answer to one decimal places (for example: 319.4).
Answers: 1
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A simple random sample of 12 iPhone's being sold over the Internet had the
following prices, in dol...
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