Justin is interested in buying a digital phone. He visited 8 stores at random and recorded the price of the particular phone he

Question

Justin is interested in buying a digital phone. He visited 8
stores at random and recorded the price of the particular
phone he wants. The sample of prices had a mean of 269.06
and a standard deviation of 34.15.
(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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