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Author Question: Assume simple random sampling has been used, and the following information was obtained. Population ... (Read 101 times)

kfurse

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on: Jun 24, 2018
Assume simple random sampling has been used, and the following information was obtained. Population size N = 900 Sample size n = 36 Sample mean x = 300 Sample standard deviation s = 72
 a. Estimate the standard error of the mean.
  b. Develop an approximate 95 confidence interval for the population mean.

Question 2

Simple random sampling has been used to obtain a sample of size 60 from a population of size 700 . The sample mean was 500 with a standard deviation of 60.
 a. Estimate the standard error of the mean.
  b. Develop an approximate 95 confidence interval for the population mean.


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smrerig

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Reply #1 on: Jun 24, 2018
Answer to Question 1

a. 11.76 (rounded)
b. 276.48 to 323.52

Answer to Question 2

a. 7.4 (rounded)
b. 458.2 to 514.8


kfurse

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

chereeb

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Reply 3 on: Yesterday
Excellent

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