MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:3. A manufacturing firm wants to determine if there is a difference in the prices
charged by two competing shipping companies. They sample shipping costs from
both companies. Test at a 0.05 level of significance.
Ho:
Ha:
Pooled variance
2
S₁²=
Mean
SAMPLE Standard Deviation
n
crit =
stat =
Decision:
Sample 1
$244.50
6
25
2 tails
α =
pvalue=
=
Sample 2
$239.7
7
30
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