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1- 50 calls are monitored and the average length of the calls are 6.5 minutes. Instead the sample standard deviation s is also calculated from the...
1- 50 calls are monitored and the average length of the calls are 6.5 minutes. Instead the sample standard deviation s is also calculated from the sample and is found to be 4.5 minutes. (I will need help with the questions below)
a.
b.
c.