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How smart is your phone? A random sample of 9 Samsung Galaxy smartphones being sold over the Internet in 2013 had the following prices, in

How smart is your phone? A random sample of 9 Samsung Galaxy smartphones being sold over the Internet in 2013 had the following prices, in dollars: 135 249 349 299 249 169 385 329 199 SalddahtoEmel Assume the population standard deviation is o = 81. Perform the following. (a) Explain why it is necessary to check whether the population is approximately normal before constmcting a condence interval. It is necessary to check whether the population is approximately normal because |(Choose one) Y

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