## Question

###### A simple random sample of 12 iPhone's being sold over theInternet had the following prices, in dollars.287, 311, 262, 392, 313, 306, 276, 316, 286, 281, 342, 291Assume that it is reasonable to believe that the population isapproximately normal and the population standard deviation is 51.What is the upper bound of the 95% confidence interval for the meanprice for all phones of this type?Round your answer to one decimal places (for example: 319.4). Writeonly a number as your answer. Do not wr

A simple random sample of 12 iPhone's being sold over the Internet had the following prices, in dollars. 287, 311, 262, 392, 313, 306, 276, 316, 286, 281, 342, 291 Assume that it is reasonable to believe that the population is approximately normal and the population standard deviation is 51. 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). Write only a number as your answer. Do not write any units.

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