A random sample of the newest model of Samsung Galaxy smartphones being sold over the Internet had the following prices, in dollars: 199 169 385 329 269 149 135 249 349 299 249 Corporate executives at Samsung would like to estimate the mean price of all Samsung Galaxy smartphones being sold over the Internet. So, we will construct a confidence interval to estimate the population mean price of all Samsung Galaxy smartphones of the latest version being sold over the Internet. Explain why it is necessary to check whether the population is approximately normal before constructing a confidence interval.

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