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Author Question: The target grade distribution for a particular course is 10% A, 30% B, 40% C, 15% D, 5% F. Students ... (Read 21 times)

haydenjmcm

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on: Feb 26, 2023

Question 1

The sampling distribution of the test statistic for a goodness-of-fit test withkcategories is:

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approximately a chi-square distribution withk – 1 degrees of freedom.


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approximately a chi-square distribution withkdegrees of freedom.


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a chi-square distribution withk – 1 degrees of freedom.


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a Student’stdistribution withk – 1 degrees of freedom.



Question 2

The target grade distribution for a particular course is 10% A, 30% B, 40% C, 15% D, 5% F. Students complain that a particular professor who teaches this course grades “too hard.” The present students survey 250 former students of this professor’s class and then do aχ2 goodness-of-fit test to see if the data provide sufficient evidence to support their complaint. They find a critical value of 14.7 and a test statistic of 9.8, withα= 0.10. What is the take-away conclusion from this survey?

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The professor’s grades do not conform to the target.


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The professor’s grades conform to the target.


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There is not sufficient statistical evidence to reject the idea that the professor’s grades conform to the target.


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There is sufficient statistical evidence to reject the idea that the professor’s grades conform to the target.

Introductory Statistics: A Problem-Solving Approach ¦ Kokoska ¦ 3rd Edition
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Marked as best answer by haydenjmcm on Feb 26, 2023

gwisel

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Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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haydenjmcm

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Reply 2 on: Feb 26, 2023
Gracias!

cici

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Reply 3 on: Yesterday
:D TYSM

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