MATH1342
PROJECT (LAB) 8 – CH 10
NAME:
________________
Collin County College
Fall 2011
Instructor:
Daryl Rupp
DUE DATE:
11/3/2011
Part I.
Recall that 9 of the 26 statistics students from the sample of First period classes received grades
of B.
Test the claim to a significance of 0.10 that the proportion of all First period statistics
students receiving B’s is equal to 0.25.
Round all answers to 3 decimal places.
(Assume the
normal approximation of a binomial (despite the fact that n*p*q <10).
0.
What is x, n,
µ
p
and
0
p
?
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:
Write the formula for the test statistic with the proper values for this
problem and calculate the Test Statistic:
7.
Test Statistic & Pvalue:
Write the keystrokes for finding the Test Statistic and Pvalue
and verify the value of the Test Statistic from (6):
8.
Pvalue:
9.
Compare the Pvalue to the Significance Level:
10. Is the Test Statistic in the Critical Region:
11. Conclusion about NULL Hypothesis:
12. Conclusion about the proportion of the population receiving A being equal to 0.25:
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Part II.
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 Fall '12
 LisaJuliano
 Math, Statistics, Statistical hypothesis testing, Daryl Rupp, Collin County College

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