STAT 230 Final Exam
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STAT 230 Final Exam
UMUC
Spring 2013
100 Points
Use the information below to answer Questions 1 through 4.
Given a sample size of 36, with sample mean 670.3 and sample standard deviation 114.9, we perform the following hypothesis test.
Null Hypothesis
Alternative Hypothesis
-
What is the test statistic?
114.9/?36
-29.7
- At a 10% significance level (90% confidence level), what is the critical value in this test? Do we reject the null hypothesis?
Table V value of .01 is
z
z which falls within so we accept.
- What are the border values between acceptance and rejection of this hypothesis?
700 /- ...
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