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Do marketing majors at your school study more than, less than, or about the same

ID: 3200123 • Letter: D

Question

Do marketing majors at your school study more than, less than, or about the same as marketing majors at other schools? The Washington Post reported the results of the National Survey of Student Engagement that found marketing majors studied an average of 12.1 hours per week. From a sample of 40 students, you have found out that the average is 11.2 hours per week. You were told that the population standard deviation was 2.7 hours per week. Perform a hypothesis test to try to show that the mean number of hours studied by marketing majors at your school is different from the 12.1-hour-per-week benchmark reported by The Washington Post using a 0.10 level of significance.

Question Step 1: The null hypothesis is Ho Step 1: The alternative hypothesis is H1 Step 2: The value of the test statistics is Step 3: The lower critical value is Note: If there is one critical value, one of the "lower critical value" or "upper critical value" should be "none". Step 3: The upper critical value is Note: If there is one critical value, one of the "lower critical value" or "upper critical value" should be "none" Step 3: The p-value is Step 4: You should Step 5: Your should conclude that

Explanation / Answer

Solution : Step 1 H0 = Null hypothesis : There is no difference between the average study.

Ha= Alternate hypothesis : There is a difference between the average study.

The value of test statistics is 0.10 or 10%

P value is 0.0214

Conclusion : Since the p value is less than our critical level , We will reject the null hypothesis

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