The random sample shown below was selected from a normal distribution. 7, 10, 8, 3, 6, 2 O Complete parts a and b. ..... a. Construct a 90% confidence interval for the population mean u. 3.51 , 8.49) (Round to two decimal places as needed.) b. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n = 25 observations. Repeat part a. What is the effect of increasing the sample size on the width of the confidence intervals? The confidence interval is ( D - (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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The random sample shown below was selected from a normal distribution.
7, 10, 8, 3, 6, 2 O
Complete parts a and b.
.....
a. Construct a 90% confidence interval for the population mean p.
( 3.51 , 8.49 ) (Round to two decimal places as needed.)
b. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n= 25
observations. Repeat part a. What is the effect of increasing the sample size on the width of the confidence intervals?
The confidence interval is ( ). (Round to two decimal places as needed.)
Transcribed Image Text:The random sample shown below was selected from a normal distribution. 7, 10, 8, 3, 6, 2 O Complete parts a and b. ..... a. Construct a 90% confidence interval for the population mean p. ( 3.51 , 8.49 ) (Round to two decimal places as needed.) b. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n= 25 observations. Repeat part a. What is the effect of increasing the sample size on the width of the confidence intervals? The confidence interval is ( ). (Round to two decimal places as needed.)
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