This preview shows page 1. Sign up to view the full content.
Unformatted text preview: vote for the Progressive Party. Is there any substantial evidence to suggest that the party has increased its support? Hint: use the fact that x n p r pq n is distributed approximately as a standard normal variate. 3. Imagine that a random sample of size 160 is drawn from a normal population where the standard deviation is 25 in order to test the null hypothesis that the mean is 104 against the alternative that it is 100. Calculate the probability of a Type II error in a onetailed test with a 5% signicance level. What sample size is required for the probability of the Type II error to be 0.05?...
View Full
Document
 Spring '12
 D.S.G.Pollock

Click to edit the document details