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Author Question: A random sample of 49 statistics examinations was taken. The average score, in the sample, was 84 ... (Read 24 times)

warrenjean01

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on: Mar 25, 2023

Question 1

A random sample of 144 observations has a mean of 20, a median of 21, and a mode of 22. The population standard deviation is known to equal 4.8. The 95.44% confidence interval for the population mean is


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15.2 to 24.8


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19.200 to 20.800


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19.216 to 20.784


◦

21.2 to 22.8



Question 2

A random sample of 49 statistics examinations was taken. The average score, in the sample, was 84 with a variance of 12.25. The 95% confidence interval for the average examination score of the population of the examinations is


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76.00 to 84.00


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77.40 to 86.60


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83.00 to 85.00


◦

68.00 to 100.00

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by warrenjean01 on Mar 25, 2023

reason44

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Reply #1 on: Mar 25, 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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warrenjean01

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

nguyenhoanhat

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Reply 3 on: Yesterday
Excellent

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