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Author Question: Find the necessary sample size.Scores on a certain test are normally distributed with a variance of ... (Read 77 times)

cabate

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on: Apr 7, 2020
Find the necessary sample size.

Scores on a certain test are normally distributed with a variance of 22. A researcher wishes to estimate the mean score achieved by all adults on the test. Find the sample size needed to assure with 95 percent confidence that the sample mean will not differ from the population mean by more than 2 units.
◦ 22
◦ 10
◦ 465
◦ 43
Introductory Statistics ¦ Weiss ¦ 10th Edition
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Marked as best answer by cabate on Apr 7, 2020

jjorrostieta

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Reply #1 on: Apr 7, 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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cabate

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Reply 2 on: Apr 7, 2020
Gracias!

isabelt_18

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Reply 3 on: Yesterday
Wow, this really help

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