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Author Question: Exhibit 10-3A statistics teacher wants to see if there is any difference in the abilities of ... (Read 14 times)

Ethanolson3

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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.)


◦

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


◦

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


◦

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


◦

There is a difference, but it is not significant.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by Ethanolson3 on Mar 25, 2023

senorfranco

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Reply #1 on: Mar 25, 2023
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Ethanolson3

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Reply 2 on: Mar 25, 2023
Wow, this really help

xiaomengxian

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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