standard deviation confidence interval

by Ranganathan 2014-05-31 11:20:03

Question:
Population standard deviation is 8 , sample size is 60, sample mean 5 find the confidence interval with 95% confidence interval

Answer:

Sample Size: 60
Sample Observed Mean: 5
Sample Observed Standard Deviation: 8
Confidence Level: 95% = 1.95996
Confidence Interval=1.95996 * ( 8 / Math.sqrt(60)) =2.024237984
Confidence Interval:±2.02


 
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