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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 9SGR
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Identify the test statistics, pvalue and confidence interval please.

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.
Transcribed Image Text: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.
Expert Solution
Step 1

a.

The proportion of commercial trucks violating laws requiring front license is,

Statistics homework question answer, step 1, image 1

Thus, the proportion of commercial trucks violating laws requiring front license is 0.1510.

The proportion of passenger cars violating laws requiring front license is,

Statistics homework question answer, step 1, image 2

Thus, the proportion of passenger cars violating laws requiring front license is 0.1132.

Step 2

Pooled proportion:

Statistics homework question answer, step 2, image 1

Thus, the pooled proportion is 0.1191.

Test statistic:

Statistics homework question answer, step 2, image 2

Thus, the test statistic is 2.10.

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