Question
Justin is interested in buying a digital phone. He visited 17 stores at random and recorded...
Justin is interested in buying a digital phone. He visited 17 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of 252.56 and a standard deviation of 11.13.
(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:
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