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A random sample of 9Samsung...

A random sample of 9Samsung Galaxy smartphones being sold over the Internet in 2013had the following prices, in dollars:

135 385 249 329 349 199 299 249 169Round your intermediate step to three decimal places. Round your answer to one decimal place.

A 90%confidence interval for the mean price for all phones of this type being sold on the Internet in 2013 is ___ < mu < ____

135 385 249 329 349 199 299 249 169Round your intermediate step to three decimal places. Round your answer to one decimal place.

A 90%confidence interval for the mean price for all phones of this type being sold on the Internet in 2013 is ___ < mu < ____

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