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Two groups were selected for an experiment. The sample data is reported below.                                                         Group A                 Group  B  Sample Mean Spending/day ($)         150                         140    Sample Standard deviation ($)           6                            10            Sample Size                               30                           25 a.   Set up a 90% confidence interval for the variance in Group A.   b.  Test the hypothesis that the true variance for group B is more than 50. Set the Type I error equal to 1%.

Two groups were selected for an experiment. The sample data is reported below.                                                         Group A                 Group  B  Sample Mean Spending/day ($)         150                         140    Sample Standard deviation ($)           6                            10            Sample Size                               30                           25 a.   Set up a 90% confidence interval for the variance in Group A.   b.  Test the hypothesis that the true variance for group B is more than 50. Set the Type I error equal to 1%.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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 Two groups were selected for an experiment. The sample data is reported below.

                                                        Group A                 Group  B

 Sample Mean Spending/day ($)         150                         140

   Sample Standard deviation ($)           6                            10

           Sample Size                               30                           25

a.   Set up a 90% confidence interval for the variance in Group A.

 

b.  Test the hypothesis that the true variance for group B is more than 50. Set the Type I error equal to 1%.

                  
 
 
 
 
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