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 α = 0.05.
a) TS =1.85 Reject H₀. The proportion of violators is less than 0.85.
b) TS =1.85 Do not reject H₀. The proportion of violators is not less than 0.85.
c) TS =1.45 Do not reject H₀. The proportion of violators is not less than 0.85.
d) TS =1.45 Reject H₀. The proportion of violators is less than 0.85.
