Author Question: Exhibit 10-3A statistics teacher wants to see if there is any difference in the abilities of ... (Read 20 times)

Ethanolson3 · **on:** Mar 25, 2023

Exhibit 10-3
A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following information.

	Today	Five Years Ago
	82.0	88
σ²	112.5	54
n	45.0	36

Refer to Exhibit 10-3. What is the conclusion that can be reached about the difference in the average final examination scores between the two classes? (Use a .05 level of significance.)

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There is a statistically significant difference in the average final examination scores between the two classes.

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There is no statistically significant difference in the average final examination scores between the two classes.

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It is impossible to make a decision on the basis of the information given.

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There is a difference, but it is not significant.

senorfranco · **Reply #1 on:** Mar 25, 2023

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