Justin is interested in buying a digital phone. He visited 9 stores at random and recorded the priceof the particular phone he wants. The sample of prices had a mean of 270.17 and a standarddeviation of 26.4(a) What t-score should be used for a 95% confidence interval for the mean,distribution?H, of theT=(b) Calculate a 95% confidence interval for the mean price of this model of digital phone:MAY 322W

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Answered: 4of the (a) What t-score should be used…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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4of the (a) What t-score should be used for a 95% confidence interval for the mean, distribution? T= (b) Calculate a 95% confidence interval for the mean price of this model of digital phone: