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Author Question: A random sample of 160 car accidents are selected and categorized by the age of the driver ... (Read 40 times)

V@ndy87

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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. Determine if the grade distribution for the department is different than expected. Use α = 0.01.



Question 2

A random sample of 160 car accidents are selected and categorized by the age of the driver determined to be at fault. The results are listed below. The age distribution of drivers for the given categories is 18% for the under 26 group, 39% for the 26-45 group, 31% for the 45-65 group, and 12% for the group over 65. Calculate the chi-square test statistic χ2 used to test the claim that all ages have crash rates proportional to their driving rates.


◦ 75.101
◦ 101.324
◦ 95.431
◦ 85.123
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by V@ndy87 on Feb 14, 2020

shaikhs

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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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V@ndy87

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Reply 2 on: Feb 14, 2020
Excellent

xiaomengxian

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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