MATH1342
LAB (Project) 9 for Ch. 11
NAME:
________________
Collin County College
Summer 2011
Instructor:
Daryl Rupp
DUE DATE:
11/22/2011
Part I.
Is there a difference in Statistics grades between First period classes and Second Period classes?
To find out, we are going to compare the average overall grades for the two samples from the
First period and Second period classes.
The First period classes had a sample mean of 87.9 and
sample standard deviation of 7.6 for a sample of 26.
The Second period classes showed a sample
mean of 88.1 and a sample standard deviation of 10.8 for a sample of 26.
Test the claim that
First period classes have a different average grade than Second period classes, to a significance
level of 0.20
1.
Claim:
2.
Alternate hypothesis:
3.
Null hypothesis:
4.
Is this a right, left or two sided test?
5.
Critical Value(s):
6.
Test Statistic & Pvalue:
Write the keystrokes for finding the test statistic and pvalue:
7.
What is the test Statistic:
8.
Pvalue:
9.
Compare the Pvalue to the Significance Level:
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 Fall '12
 LisaJuliano
 Math, Statistics, Standard Deviation, Statistical hypothesis testing, red rash, period classes

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