17. A company is interested in evaluating its current inspection procedure onshipments of 50 identical items. The procedure is to take a sample of 5 and pass theshipment if no more than 2 are found to be defective. What proportion of 20%defective shipments will be accepted?

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Answered: 17. A company is interested in…

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. Blood Types Human blood is grouped into fourtypes: A, B, AB, and O. The percents of Americans with each type are as follows: O, 43%; A, 40%; B, 12%; and AB, 5%. At a recent blood drive at a large university, the donors were classified as shown below. At the 0.05 level of significance, is there sufficient evidence to conclude that the proportions differ from those stated above?O A B AB60 65 15 10
2. A claim is made that the proportion of adults who text is less than 0.4. Find the test statistic if the the sample size is n= 987 with 398 adults saying that they text. Show work.
50. Which of the following involves dependent samples: a. Testing the difference in life expectancy between left- and right-handed people b. Evaluating the growth of grizzly bears by weighing each bear at both 1 and 2 years of age C. Assessing the difference in age of automobiles driven by faculty and students d. Determining the effectiveness of a drug by examining the difference in successful responses between a treatment (got the drug) group and a control (got a placebo) group of patients
7. In a sample with M = 40 and s = 8, what is the z-score corresponding to X = 38?
4. If the sample size is 30 and the mean score for group one is 5.6, mean score for group two is 7.8, and mean score for group three is 4.8, what is the SS between of this study?
3. Suppose that the inside diameter of bulb lamp manufactured by a company are normally distributed with a sample of 200 bulb lamps, µ = 0.502 inches, and o = 0.005 inches. A bulb lamp will be considered defective if its diameter is less than 0.496 inches or greater than 0.508 inches. What is the percentage of defective bulb lamp produced by the company? What did the answer indicate?
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10. Claim: P₁ = P₂; α = 0.05. Sample statistics: x1 = 265, n₁ - X2 204, 2 - 301, 247 'D
7. Researchers at the University of Mississippi wanted to determine whether the reaction time (in seconds) of males differed from that of females to a go/no go stimulus. The researchers randomly selected 20 females and 15 males to participate in the study. As described, is this an example of independent or dependent sampling? Explain your answer.
1. Suppose the proportion of American adults who work at home is 40%. For a random sample of 100 American adults, what is the distribution of the sample proportion?
13. According to Wikipedia, as of November 30, 2019, 43.5% of registered voters in Mercer County are registered democrats (pm = 0.435), and 24.5% of registered voters in Hunterdon County are registered democrats (ph = 0.245). A researcher decides to take an SRS of 45 registered voters in Mercer County and an independent SRS of 45 registered voters in Hunterdon County to investigate, and is surprised when he gets a greater sample proportion of registered democrats in the Hunterdon County sample. Calculate and interpret the probability that the sample proportion of registered democrats in Hunterdon County is greater than the sample proportion of registered democrats in Mercer County. Be sure to show all of your work. (Note- - for those of you wondering why the percentages of registered democrats in the "blue" state of New Jersey are so low, many registered voters in New Jersey do not register with any particular political party)
Suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers should the manager survey in order to be 92% confident that the estimated (sample) proportion is within 8 percentage points of the true population proportion of customers who are males? z0.10 z0.05 z0.04 z0.025 z0.01 z0.005 1.282 1.645 1.751 1.960 2.326 2.576 Use the table of values above.

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17. A company is interested in evaluating its current inspection procedure on 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 20% defective shipments will be accepted?