Suppose that 14% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming and can be reworked. (Round your answers to four decimal places.) A USE SALT (a) What is the (approximate) probability that X is at most 30? (b) What is the (approximate) probability that X is less than 30? (c) What is the (approximate) probability that X is between 15 and 25 (inclusive)?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Suppose that 14% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among
these that are nonconforming and can be reworked. (Round your answers to four decimal places.)
In USE SALT
(a) What is the (approximate) probability that X is at most 30?
(b) What is the (approximate) probability that X is less than 30?
(c) What is the (approximate) probability that X is between 15 and 25 (inclusive)?
Transcribed Image Text:Suppose that 14% of all steel shafts produced by a certain process are nonconforming but can be reworked (rather than having to be scrapped). Consider a random sample of 200 shafts, and let X denote the number among these that are nonconforming and can be reworked. (Round your answers to four decimal places.) In USE SALT (a) What is the (approximate) probability that X is at most 30? (b) What is the (approximate) probability that X is less than 30? (c) What is the (approximate) probability that X is between 15 and 25 (inclusive)?
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