Mathematics, 03.12.2019 03:31, jazzzzhands21

Arandom sample of 49 text books purchased at a local bookstore showed an average price of $122 with a population standard deviation of $15. let u (new) be the true mean cost of a text book sold by this store. construct a confidence interval with a 90% degree of confidence. clearly label the following:
a. point estimate
b. critical value,
c. margin of error
d. confidence interval
e. interpretation (confidence statement).

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Arandom sample of 49 text books purchased at a local bookstore showed an average price of $122 with...