26. Four workers work in a small factory assembling chairs in which of them respectively assembles30%, 30%, 20%, and 20% of the chairs. From the past record, it is know that each of theworkers are responsible for 7%, 5%, 3%, and 2% of defective chairs, respectively. Supposethat a chair is chosen at random, what is the probability that the chair is defective?(a) 0.021(c) 0.042(b) 0.036(d) 0.046

Given: Worker Proportion of chairs assembled Proportion of defectives 1 30% 7% 2 30% 5%…

Answered: 26. Four workers work in a small…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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5. A manufacturer of cell phones purchases batteries from a vendor. It is not uncommon to receive defective batteries from this vendor, thus whenever a shipment is received, a sample of batteries is inspected. For this month's shipment, a random sample of 280 batteries is selected and each battery is inspected. If the proportion of defective batteries sampled is more than 1.5%, the entire shipment will be returned to the vendor. What is the probability that this month's shipment will be returned if the true proportion of defective batteries is 4%?
Suppose 30% of the restaurants in a certain part of a town are in violation of the health code. A health inspector randomly selects six of the restaurants for inspection. (Round your answers to four decimal places.) (c) What is the probability that at least two of the restaurants are in violation of the health code?
20. Based on student records, 25% of the students at a large high school have a GPA of 3.5 or better, 16% of the students are currently enrolled in at least one AP class, and 12% of the students have a GPA of 3.5 or better and are enrolled in at least one AP class. If we select one student at random, what is the probability that the student has a GPA lower than 3.5 and is not taking any AP classes? (A) 0.29 (B) 0.47 (C) 0.53 (D) 0.63 (E) 0.71
Thirteen jurors are randomly selected from a population of 5 million residents. Of these 5 million residents, it is known that 42% are of a minority race. Of the 13 jurors selected, 2 are minorities. (a) What proportion of the jury described is from a minority race? (b) lf 13 jurors are randomly selected from a population where 42% are minorities, what is the probability that 2 or fewer jurors will be minorities? (c) What might the lawyer of a defendant from this minority race argue? (a) The proportion of the jury described that is from a minority race is (Round to two decimal places as needed.) (b) The probability that 2 or fewer out of 13 jurors are minorities, assuming that the proportion of the population that are minorities is 42%, is (Round to four decimal places as needed.) (c) Choose the correct answer below. O A. The number of minorities on the jury is impossible, given the composition of the population from which it came. O B. The number of minorities on the jury is unusually…
4 children. He makes a fast, wrong estimate of the probability of various mixes of boys and girls among QUESTION 3. Mr. Fastwrong is working for the census department and he is counting families that have the families. His assistant, Ms. Slowright, analyzes the issue and corrects his work. Fill her corrections of his wrong guesses into the table below. Number of boys among the 4 children 1 0 4 3 2 Number of girls among the 4 children 0 1 2 4 Use fractions (not percents) in your answers. Mr. Fastwrong's estimate of the fraction of families having this distribution of boys and girls 1/5 1/5 1/5 1/5 1/5 Ms. Slowright's estimate of the fraction of families having this distribution of boys and girls
n one state, 52% of the voters are Republicans, and 48% are Democrats. In a second state, 47% of the voters are Republicans, and 53% are Democrats. Suppose a simple random sample of 100 voters are surveyed from each state. What is the probability that the survey will show a greater percentage of Republican voters in the second state than in the first state? (A) 0.04(B) 0.05(C) 0.24
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I Example 7 A manufacturer finds that 10% of articles made in his factory are defective. If he takes 3 articles at random what is the probability that there are more defective than non defective articles amongst the three. 0.028

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