In a recent study of 51 eighth graders, the mean number of hours per week that they watched television 21.9. assume the standard deviation =5.8 hours.
If possible, find the 97% confidence interval of the mean. Interpret the meaning of this interval.
If the standard deviation is doubled to 11.6, what will be the effect on the confidence interval?
How would I attempt this problem?© BrainMass Inc. brainmass.com March 4, 2021, 8:11 pm ad1c9bdddf
The solution constructs a 97% confidence interval.