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The number of cars that travel through an intersection between noon and 1pm is measured for 30 consecutive days. The results of the 30 observations are: 61,62,63,63,64,64,66,66,67,68,68,68,68,69,69,69,69,70,70,70,70,71,71,72,73,74,74,75,76,and 79

Find: a.) Range
b.) Standard Deviation
c.) The population standard deviation
d.) Variances for sample and population

Solution Preview

We use Excel and get the following
<br>
<br>Mean 68.96666667
<br>Standard Error 0.782691104
<br>Median 69
<br>Mode 68
<br>Standard Deviation 4.286975731
<br>Sample ...

Solution Summary

The number of cars that travel through an intersection between noon and 1pm is measured for 30 consecutive days. The results of the 30 observations are: 61,62,63,63,64,64,66,66,67,68,68,68,68,69,69,69,69,70,70,70,70,71,71,72,73,74,74,75,76,and 79

Find: a.) Range
b.) Standard Deviation
c.) The population standard deviation
d.) Variances for sample and population

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