Answered: Tellers A bank is studying the time…

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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Question

Tellers A bank is studying the time that it takes 6 of its
tellers to serve an average customer. Customers line up in
the queue and then go to the next available teller. Here is
a boxplot of the last 200 customers and the times it took
each teller:

ANOVA Table

Source DF
Sum of
Squares
Mean
Square F-Ratio P-Value
Teller 5 3315.32 663.064 1.508 0.1914
Error 134 58919.1 439.695
Total 139 62234.4
a) What are the null and alternative hypotheses?
b) What do you conclude?
c) Would it be appropriate to run a multiple comparisons

test (for example, a Bonferroni test) to see which tell-
ers differ from each other? Explain.

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