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The following data shows the packages gathered for delivery for ten days and the proportion of packages received not delivered to the customers at expected time.

Day Collected Packages Not delivered Proportion

1 136 4

2 153 6

3 127 2

4 157 7

5 144 5

6 122 5

7 154 6

8 132 3

9 160 8

10 142 7

A. Construct the proportions charts for this process.

B. Is the mail package delivery out of control?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9355450

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