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Author Question: A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; ... (Read 97 times)

kaid0807

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on: Feb 14, 2020

Question 1

A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded. Calculate the chi-square test statistic χ2 used to determine if the grade distribution for the department is different than expected. Use α = 0.01.


◦ 5.25
◦ 6.87
◦ 4.82
◦ 3.41

Question 2

A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded. Find the rejection region used to determine if the grade distribution for the department is different than expected. Use α = 0.01.


◦ χ2 > 13.277
◦ χ2 > 7.779
◦ χ2 > 11.143
◦ χ2 > 9.488
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by kaid0807 on Feb 14, 2020

mohan

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Reply #1 on: Feb 14, 2020
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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kaid0807

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Reply 2 on: Feb 14, 2020
Wow, this really help

frankwu0507

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Reply 3 on: Yesterday
Gracias!

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