Test the given claim. Identify the null hypothesis,
alternative hypothesis, test statistic, P-value, and
then state the conclusion about the null hypothesis, as well
as the final conclusion that addresses the original claim.
Among 2070 passenger cars in a
particular region, 236 had only rear license
plates.
Among 377 commercial trucks, 56 had only
rear license plates. A reasonable hypothesis is that commercial
trucks owners violate laws requiring front license plates at a
higher rate than owners of passenger cars. Use
a 0.05 significance level to test that hypothesis.
a. Test the claim using a hypothesis test.
b. Test the claim by constructing an appropriate confidence
interval.
1) Identify the test statistic
2) Identify the P Value
3) Identify the confidence interval limits