Exhibit 10-3A statistics teacher wants to see if there is any ...

[Ethanolson3]

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]

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[Ethanolson3]

Thanks for the timely response, appreciate it

[cam1229]

Great answer, keep it coming