Question

The number of defective microchips produced by machine # 6 during each of the last 24 hours of operation is shown in the frequency table below:
Defectives x No. of hours f(x)
0........... 9
1.......... 6
2.......... 4
3.......... 3
4.......... 2
Total = 24
a. Compute the mean number of defectives per hour over the 24-hour period. (Treat the data as a population.)
b. What is the median number of defectives per hour?
c. Compute the variance and the standard deviation for the hourly defective counts.


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  • CreatedJuly 16, 2015
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