Answer:
[tex]Center\ Line = 0.05[/tex]
Step-by-step explanation:
Given
[tex]n = 50[/tex] --- daily samples
[tex]days = 40[/tex]
Required
Determine the center line of the p-chart
The question states that, in all the 40 days; the average percentage of incorrect shipments is 5%
And the center line of a p chart is a measure of the expected value of all proportions
This implies that:
[tex]Center\ Line = 5\%[/tex]
[tex]Center\ Line = 0.05[/tex]