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Author Question: Assume the standard normal curve and determine the probability or area between z = -1.28 and z = ... (Read 90 times)

RODY.ELKHALIL

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Assume the standard normal curve and determine the probability or area between z = -1.28 and z = 1.28.

Question 2

In a production of 1000 plastic moldings, 75 were incompletely formed and had to be discarded. Based on these data the total production of plastic moldings should have what estimated proportion of incompletely formed moldings?



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patma1981

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Answer to Question 1

0.7994

Answer to Question 2

0.075





 

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