Statistics - Null and Alternative Hypothesis, Type 1 Error
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Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates mean (mu) of a population, is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 42 hours and that the standard deviation is 4 hours.
Based on this information, answer the questions below.
what are the null and alternative hypothesis ?
type 1 eror is ?
the hypothesis that mean is?
Suppose that we decide not to reject the null hypothesis. Waht sort of error might we be making?
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Solution Summary
The null and alternative hypothesis are determined for college graduates gaining full time employment. A complete, neat and step-by-step solution is provided.
Solution Preview
(1) H0: m = 40 vs Ha: m <> 40
(2) Type I error is rejecting a ...
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