Answer :
The mean of the Hawkins Company, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83 is 83.03
the Hawkins Company, the monthly percentages of all shipments are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83
This occurs for a time span of 12 months.
So, the number of observations is 12
We need to calculate the mean monthly percentage of the shipments
mean = sum of all observations / number of observations
mean = (80 + 82 + 84 + 83 + 83 + 84 + 85 + 84 + 82 + 83 + 84 + 83)/12
mean = 997/12 = 83.08
Therefore,, the monthly percentages of all shipments received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83. So, the mean of the Hawkins Company is 83.03
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