v Fl X Q MQM 10 es/4428917/take estion 10 How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and. the population standard deviation is known to be 6 minutes. 07 0 9 O 15 O 13

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w Fl X
MQM 100 CHP
es/4428917/take
estion 10
How many commuters must be randomly selected to estimate the mean driving time of Chicago
commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and
the population standard deviation is known to be 6 minutes.
07
0 9
O 15
O 13
Question 11
of freedom and a 98% confidence interval is:
Transcribed Image Text:w Fl X MQM 100 CHP es/4428917/take estion 10 How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 6 minutes. 07 0 9 O 15 O 13 Question 11 of freedom and a 98% confidence interval is:
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