Question: Amy wants to know the standard deviation for a machine she operates. In order to carry out this task, she creates a p-chart. Over the

Amy wants to know the standard deviation for a machine she operates. In order to carry out this task, she creates a p-chart. Over the course of a month, she gathers 30 samples of 80 observations each, recording the number of errors as she goes. The average proportion defective is discovered to be 0.025. Choose the value among the choices provided that represents the standard deviation of the machine.

Answers

a).027

b).047

c).017

d).037

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