3.23 A company is interested in evaluating its currentinspection procedure for shipments of 50 identicalitems. The procedure is to take a sample of 5 andthe shipment if no more than 2 are found to bedefective. What proportion of shipments with 20% defectiveswill be accepted?pass3.28 It is estimated that 4000 of the 10,000 votingresidents of a town are against a new sales tax. If 15eligible voters are selected at random and asked theiropinion, what is the probability that at most / favorthe new tax?

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3.23 A company is interested in evaluating its current inspection procedure for shipments of 50 identical items. The procedure is to take a sample of 5 and pass the shipment if no more than 2 are found to be defective. What proportion of shipments with 20% defectives rwill be accepted?

3.23 A company is interested in evaluating its current inspection procedure for shipments of 50 identical items. The procedure is to take a sample of 5 and pass the shipment if no more than 2 are found to be defective. What proportion of shipments with 20% defectives rwill be accepted?

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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10. Claim: P₁ = P₂; α = 0.05. Sample statistics: x1 = 265, n₁ - X2 204, 2 - 301, 247 'D
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2. The fuel economy sticker on a new SUV's window sticker indicates the owner can expect 16 mpg in city driving, 20 mpg highway driving and 18 mpg overall. Accurate gasoline records for one such vehicle were kept, and a random sample of mileage per tank for 50 fill-ups of gasoline was collected: 17.6 17.7 18.1 22.0 17.0 19.4 18.9 17.4 21.0 19.2 18.3 19.1 20.7 16.7 19.4 18.2 18.4 17.1 17.4 15.8 17.9 18.0 16.3 17.5 17.3 20.4 19.1 21.0 18.1 19.0 19.6 18.9 16.8 18.2 17.6 19.1 18.0 16.8 20.9 17.9 17.7 20.3 18.6 19.0 16.5 19.4 18.6 18.6 17.3 18.7 a. b. Calculate the sample mean and standard deviation for this data. Round your answers to three decimal places. C. Can we consider the data to be normally distributed? Explain. d. Calculate a 99% confidence interval for this data set. Interpret your interval in the context of the problem.