a large shipment a) A quality engineer selects a simple random sample of 10 switches from detailed inspection. Unknown to the engineer, 10% of the switches in the shipment fail to meet the specifications.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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a) A quality engineer selects a simple random sample of 10 switches from a large shipment
detailed inspection. Unknown to the engineer, 10% of the switches in the shipment fail to
meet the specifications.
(i) What is the probability that no more than 1 of the 10 switches in the sample fails inspect
(rounded to three decimal places)?
(ii) What is the probability that at least nine of the 10 switches in the sample fail inspect
(rounded to three decimal places)?
(iii) In a box containing 100 switches, find the average number of switches that failed to m
the inspection (rounded off to zero decimals).
(iv) In a box containing 100 switches, find the standard deviation of switches that failed to m
the inspection (rounded off to zero decimals).
Transcribed Image Text:a) A quality engineer selects a simple random sample of 10 switches from a large shipment detailed inspection. Unknown to the engineer, 10% of the switches in the shipment fail to meet the specifications. (i) What is the probability that no more than 1 of the 10 switches in the sample fails inspect (rounded to three decimal places)? (ii) What is the probability that at least nine of the 10 switches in the sample fail inspect (rounded to three decimal places)? (iii) In a box containing 100 switches, find the average number of switches that failed to m the inspection (rounded off to zero decimals). (iv) In a box containing 100 switches, find the standard deviation of switches that failed to m the inspection (rounded off to zero decimals).
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