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March 29, 2015

Homework Help: statistics

Posted by Scott on Monday, August 9, 2010 at 5:05pm.

Given a sample size of 38, with sample mean 660.3 and sample standard deviation 95.9 we are to perform the following hypothesis test.
Null Hypothesis H0: = 700
Alternative Hypothesis H0: 700
At significance level 0.05

3. Calculate the test statistics
(Tip: this is the case when we test the claim about population mean with population standard deviation not known; 95.9 is a sample standard deviation not a population standard deviation).
4. Use Table A-3 to find critical value for this test and make decision:
reject or do not reject the Null Hypothesis?

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