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Jude is interested in buying a digital camera. He visited 9 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of 350.22 and a standard deviation of 26.17.

(a) What t-score should be used for a 95% confidence interval for the mean, ?, of the distribution?

t* =

(b) Calculate a 95% confidence interval for the mean price of this model of digital phone:

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Category:- Statistics and Probability
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