A manufacturer produces light-bulbs that are packed into boxes of 100. If quality controlstudies indicate that 0.25% of the light-bulbs produced are defective, using a suitable7.approximation,a) determine the probability of the boxes will contain no defective light-bulb.b) find the percentage of boxes which has 2 or more defective light-bulbs.

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7. A manufacturer produces light-bulbs that are packed into boxes of 100. If quality control studies indicate that 0.25% of the light-bulbs produced are defective, using a suitable approximation, a) determine the probability of the boxes will contain no defective light-bulb. b) find the percentage of boxes which has 2 or more defective light-bulbs.

7. A manufacturer produces light-bulbs that are packed into boxes of 100. If quality control studies indicate that 0.25% of the light-bulbs produced are defective, using a suitable approximation, a) determine the probability of the boxes will contain no defective light-bulb. b) find the percentage of boxes which has 2 or more defective light-bulbs.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

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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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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A manufacturer produces light-bulbs that are packed into boxes of 100. If quality control
studies indicate that 0.25% of the light-bulbs produced are defective, using a suitable
7.
approximation,
a) determine the probability of the boxes will contain no defective light-bulb.
b) find the percentage of boxes which has 2 or more defective light-bulbs.

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