QUESTION 29 You are interested in determining whether the grades of current high

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QUESTION 29 You are interested in determining whether the grades of current high school students in Grand Forks are different than the grades of past students. The state board of education is able to tell you that the mean GPA for students graduating in Grand Forks in the past 40 years is 2.82, but that is all the information they have. You randomly select 90 students who are about to graduate and compute their mean GPA. Which statistical test will tell you if there is a difference in GPA between the current students and students from the past 40 years? O z-score for sample means (single sample z test) single sample t test independent measures t test related samples test QUESTION 30 Click save and Submit to save and submit. Click Save All Answers to save all answers

Explanation / Answer

Question 29) Solution:

We can use here single sample t test.

We don't know population standard deviation also.

Therefore, single sample t test is appropriate here.

Option b) is correct.

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