We want to test the hypothesis that at least 85% of drivers on a freeway violate the speed limit. In a random sample of n = 1,100 vehicles, 83% violated the speed limit. Compute the test statistic.

State the null and alternative hypotheses and the decision rule. Use = 0.05.

aTS =1.85Reject H. The proportion of violators is less than 0.85.

bTS =1.85Do not reject H. The proportion of violators is not less than 0.85.

cTS =1.45Do not reject H. The proportion of violators is not less than 0.85.

dTS =1.45Reject H. The proportion of violators is less than 0.85.