The random sample shown below was selected from a normal distribution.   10​, 8​, 5​, 4​, 7​, 2      Complete parts a and b.       a. Construct a 90​% confidence interval for the population mean μ.   enter your response here,enter your response here ​(Round to two decimal places as​ needed.)   b. Assume that sample mean x and sample standard deviations 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 enter your response here,enter your response here. ​(Round to two decimal places as​ needed.)     What is the effect of the sample size on the width of the confidence​ interval?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
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.
 
10​, 8​, 5​, 4​, 7​, 2
  
 
Complete parts a and b.
 
 
 
a. Construct a
90​%
confidence interval for the population mean
μ.
 
enter your response here,enter your response here
​(Round to two decimal places as​ needed.)
 
b. Assume that sample mean
x
and sample standard deviations
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
enter your response here,enter your response here.
​(Round to two decimal places as​ needed.)
 
 
What is the effect of the sample size on the width of the confidence​ interval?
 
 
A.
As the sample size​ increases, the width decreases.
 
B.
As the sample size​ increases, the width stays the same.
 
C.
As the sample size​ increases, the width increases.
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