3. A retail company is interested in examining whether the time taken for it to obtain approval for a credit card number by phone varies from one day of the week to another. The manager collects the following results. On Mondays, a sample of nį = 20 cases had a sample average of x1. = 20.44 seconds with a sample standard deviation of s1 =1.338 seconds. On Wednesdays, a sample of n2= 15 cases had a sample average of x2. = 16.33 seconds with a sample standard deviation of s2 = 1.267 seconds, and on Fridays, a sample of n3 seconds with a sample standard deviation of S3 = 1.209 seconds. a) Set up the Ho and Ha hypothesis b) Find out the F statistic c) Decide the p-value is above 0.05, between 0.01 and 0.05, or below 0.01. d) At the significant level of 0.01, what should the manager conclude? = 18 cases had a sample average of x3.= 15.34

3. A retail company is interested in examining whether the time taken for it to obtain approval for a credit card number by phone varies from one day of the week to another. The manager collects the following results. On Mondays, a sample of nį = 20 cases had a sample average of x1. = 20.44 seconds with a sample standard deviation of s1 =1.338 seconds. On Wednesdays, a sample of n2= 15 cases had a sample average of x2. = 16.33 seconds with a sample standard deviation of s2 = 1.267 seconds, and on Fridays, a sample of n3 seconds with a sample standard deviation of S3 = 1.209 seconds. a) Set up the Ho and Ha hypothesis b) Find out the F statistic c) Decide the p-value is above 0.05, between 0.01 and 0.05, or below 0.01. d) At the significant level of 0.01, what should the manager conclude? = 18 cases had a sample average of x3.= 15.34

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Description: 3. A retail company is interested in examining whether the time taken for it to obtain approval fora credit card number by phone varies from one day of the week to another. The manager collectsthe following results. On Mondays, a sample of ni = 20 c

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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