Confidence interval for the mean price for all phones

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How smart is your phone? A random sample of 11 Samsung Galaxy smartphones being sold over the Internet in 2013 had the following prices, in dollars:

199 169 385 329 269 149 135 249 349 299 249

Assume the population standard deviation is σ = 85. Assuming that the population is approximately normal, construct a 95% confidence interval for the mean price for all phones of this type being sold on the Internet in 2013.

Reference no: EM132852452

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