The Arizona Department of Transportation (ADoT) is considering changing limits from 65 mph to 75 mph. They wish to perform analysision p, the proportion of Arizona residents that favor this change. In order to prove that a majority of residents favor the change, ADoT wishes to test the following hypotheses using a level of significance of 0.05.
Ho:p = 0.5 Hi:p > 0.5
ADoT wishes to design the test to have a power of 90% if the true population proportion is equal to 0.55.
Part a (5 points): How many residents should be surveyed? You may use this sample size for the remainder of this problem. (Note: You should get a value between 800 and 900 on this part. If you did not, then choose a value between 800 and 900 and use it to work the remainder of the problem.)

pur-new-sol

Related Questions