ever is flawed if a standard nut cannot be screwed onto the threads. Let p equal the proportion of flawed toggle evers that the shop manufactures. If there were 24 flawed evers out of a sample of 642 that were selected randomly from the production line, a) Give a point estimate of p. b) Use Equation 73-2 to find an approximate 95% confidence interval for p.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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7.3-1 (a) 0.0374; (b) [0.0227, 0.0521]
Transcribed Image Text:7.3-1 (a) 0.0374; (b) [0.0227, 0.0521]
7.3-1. A machine shop manufactures toggle levers. A
lever is flawed if a standard nut cannot be screwed onto
the threads. Let p equal the proportion of flawed toggle
levers that the shop manufactures. If there were 24 flawed
levers out of a sample of 642 that were selected randomly
from the production line,
(a) Give a point estimate of p.
(b) Use Equation 73-2 to find an approximate 95%
confidence interval for p.
Transcribed Image Text:7.3-1. A machine shop manufactures toggle levers. A lever is flawed if a standard nut cannot be screwed onto the threads. Let p equal the proportion of flawed toggle levers that the shop manufactures. If there were 24 flawed levers out of a sample of 642 that were selected randomly from the production line, (a) Give a point estimate of p. (b) Use Equation 73-2 to find an approximate 95% confidence interval for p.
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