Use the following to answer questions 42-44: In an electronic company that produ

Question

Use the following to answer questions 42-44: In an electronic company that produces transistors, 1000 transistors are inspected at regular intervals. The proportion of nonconforming transistors produced by the process, estimated from data collected in a one-month period, is P^bar = 0.0026 The center line for a p chart of future samples of size 1000 is: 0.0026. 0.0051. 0.0077. 0.0152. The lower control limit for a p chart of future samples of size 1000 is: 0. 0.0010. 0.0016. 0.0025. The lower control limit for a p chart of future samples of size 10,000 is: 0. 0.0011. 0.0021. unable to be determined because the data involve samples of size 1000.

Explanation / Answer

(42) The center line is same as p-bar = 0.0026

(43) Lower limit = p-bar - [(p-bar * (1 - p-bar))/n] = 0.0026 - [(0.0026 * (1 - 0.0026))/1000] = 0.0010

(44) Unable to be determined because the data involves samples of size 1000.

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