Homework Help: STATS

Posted by Mary on Tuesday, March 30, 2010 at 12:27am.

Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9 we are to perform the following hypothesis test.
Null Hypothesis H0: ƒÊ = 700
Alternative Hypothesis H0: ƒÊ ‚ 700
At significance level 0.05

1. What is the critical value for this test? Calculate the test statistics.
2. Do we reject the Null Hypothesis? (explain why)

STATS - PsyDAG, Tuesday, March 30, 2010 at 10:46am
Is your symbol, ƒÊ = μ = mean?

Ho: μ = 700
H1: μ ≠ 700

For P = .05, need μ ± 1.96 SE

SE = SD/√(n-1)

I hope this helps.

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