Essay
Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies was taken and the following running times were obtained. Assume the distribution of the population is normally distributed. 
a.State the null and alternative hypotheses.
b.Using a critical value, test the hypothesis at the 10% level of significance.
c.Using a p-value, test the hypothesis at the 10% level of significance.
d.Using a confidence interval, test the hypothesis at the 10% level of significance.
e.Could a Type II error have been committed in this hypothesis test?
Correct Answer:
Verified
a.H0: 
=140
Ha: ...View Answer
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Correct Answer:
Verified
=140Ha:
...View Answer
Unlock this answer now
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