Mr Stat makes a claim the mean age of all his students is 28. His doubting colleagues suspect this average may be too high so they select a sample of 81 students. They find the mean age of the sample is 25.58 with a standard deviation of 7.84. Test the claim at the 0.05 significance level. Part A- Ho: H = Part B - Ha: H Part C-State alpha

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QUESTION 11
Mr Stat makes a claim the mean age of all his students is 28. His doubting colleagues suspect this average may be too high so they select a
sample of 81 students. They find the mean age of the sample is 25.58 with a standard deviation of 7.84. Test the claim at the 0.05 significance
level.
Part A - Ho: H =
%3D
Part B - Ha: H
Part C- State alpha
(Answer f should be the inequality
Part D- Reject null if
%3D
symbol, and Answer g should be the value.)
Part E- The test statistic is
Either Reject the null or Accept the null
Part F- Write the decision
there is evidence to
Part G- At X =
%3D
Transcribed Image Text:QUESTION 11 Mr Stat makes a claim the mean age of all his students is 28. His doubting colleagues suspect this average may be too high so they select a sample of 81 students. They find the mean age of the sample is 25.58 with a standard deviation of 7.84. Test the claim at the 0.05 significance level. Part A - Ho: H = %3D Part B - Ha: H Part C- State alpha (Answer f should be the inequality Part D- Reject null if %3D symbol, and Answer g should be the value.) Part E- The test statistic is Either Reject the null or Accept the null Part F- Write the decision there is evidence to Part G- At X = %3D
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