Ten samples of a process measuring the number of returns per 100 receipts were taken for a local retail store. The number of returns were 10, 9, 11, 7, 3, 12, 8, 4, 6, and 11. Find the standard deviation of the sampling distribution for the p-bar chart.

Question

Mathematics

Alberto Ruiz

8 January, 23:08

Ten samples of a process measuring the number of returns per 100 receipts were taken for a local retail store. The number of returns were 10, 9, 11, 7, 3, 12, 8, 4, 6, and 11. Find the standard deviation of the sampling distribution for the p-bar chart.

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Answers (1)

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Roderick Kirk · Answer 1

Standard Deviation = 0.0273

Step-by-step explanation:

P = Total number of returns / (Sample * Timetaken)

= 81 / (100 * 10)

= 0.081

Standard Deviation = √ ((P * (1 - P)) / Samples

= √ ((0.081 * (1 - 0.081)) / 100

= 0.0273