Justin is interested in buying a digital phone. He visited 10 stores at random and recorded the price of the particular phone he

Question

Justin is interested in buying a digital phone. He visited 10 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of 332.88 and a standard deviation of 10.23. 
(a) What t-score should be used for a 95% confidence interval for the mean, μ, of the distribution? 
t* = 
(b) Calculate a 95% confidence interval for the mean price of this model of digital phone: (Enter the smaller value in the left answer box.) 
   to

Kunduz · Accepted Answer

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