A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit to the chain's new store in the mall. Fifteen credit card accounts were randomly sampled and analyzed with the following results: X_bar = $50.50 and S = 20.Assuming the distribution of the amount spent on their first visit is normal what is the shape of the sampling distribution of the sample mean that will be used to create the desired confidence interval for u?O a) Approximately normal with a mean of $50.50O b) A standard normal distributionO c) At distribution with 15 degrees of freedomO d) At distribution with 14 degrees of freedom

Solution: Let X be the amount its credit card customers spent on their first visit to the chains new…

Answered: A major department store chain is…

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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