77. An aircraft seam requires 25 rivets. The seam willhave to be reworked if any of these rivets isdefective. Suppose rivets are defective independentlyof one another, each with the same probability.a. If 15% of all seams need reworking, what is theprobability that a rivet is defective?b. How small should the probability of a defectiverivet be to ensure that only 10% of all seamsneed reworking?

Answered: Image /qna-images/answer/0299d151-ab1f-4719-aa1d-90c6f9bdbd60.jpg

Answered: e to be reworked if any of these rivets…

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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A bag contains 5 white, 7 red and 9 black balls. If three balls are picked out one at a time at random and not returned to the bag (i.e. without replacement). What is the probability that in the sample there will be 3 red balls. Enter the numerical value of your answer only, giving your answer to 4 decimal places if needed. For example, if your answer was 0.3076923 this would be rounded to 0.3077. If your answer is an exact decimal number such as 0.32 you would just enter 0.32. Round your answer to 4 decimal places.
Suppose a math class contains 28 students. There are 17 females (two of whom speak Spanish) and 11 males (three of whom speak Spanish). Give all answers as decimals to at least two decimal places.1. What is the probability that a randomly selected student speaks Spanish, given that the student is female? 2. What is the probability that a randomly selected student does not speak Spanish, given that the student is male? 3. What percent of Spanish speaking students are male? Give answer as a decimal. 4. If someone does not speak Spanish what is the probability they are female?
A coin is loaded so that the probability of heads is 0.55 and the probability of tails is 0.45. Suppose the coin is tossed twice and the results of the tosses are independent. What is the probability of obtaining exactly two heads? (Your answer should be a decimal rounded to 4 decimal places, NOT as a percentage)
In a certain class of students, there are 11 boys from Wilmette, 7 girls from Wilmette, 5 boys from Winnetka, 4 girls from Winnetka, 4 boys from Glencoe, and 4 girls from Glencoe. If the teacher calls upon a student to answer a question, what is the probability that the student will be a boy? Round to three decimal places as needed.
For 100 births, P(exactly 58 girls) = 0.0223 and P(58 or more girls) = 0.067. Is 58 girls in 100 births a significantly high number of girls? Which probability is relevant to answering that question? Consider a number of girls to be significantly high if the appropriate probability is 0.05 or less. The relevant probability is so 58 girls in 100 births a significantly high number of girls because the relevant probability is 0.05. Click to select your answer(s). 41,405 MAR -> esc a Search se
In a particular meeting, there are 10 people: 5 are accountants, 3 are lawyers, and 2 are engineers. We need to choose a 3-member committee at random to write up the meeting report. If we draw three names from a hat, which of the following correctly calculates the probability that we choose an accountant, followed by another accountant, followed by an engineer? Note that this process is just like drawing cards from a card deck without replacement! i. ii. 115 iv. X :2 510 CGP 5 10 5 5 5 2 10 10 10 X X X 12 49 X 4 2 X 10 10 X - X 218 -10 45
Suppose a math class contains 33 students. There are 23 females (five of whom speak Spanish) and 10 males (two of whom speak Spanish). Give all answers as decimals to at least two decimal places.1. What is the probability that a randomly selected student speaks Spanish, given that the student is female? 2. What is the probability that a randomly selected student does not speak Spanish, given that the student is male?
Q.4. If two fair dice are thrown, what is the probability of getting (i) a double six (ii) a sum of 8 or more dots
Suppose that the probability that a child living in an urban area in the United States is obese is 20%. If a social worker sees 15 children living in urban areas, what is the probability that 5 are obese? Enter response as .xxxx
Determine the probability of the three given problem.
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Assuming that the probability that an individual changes residence during the year is 0.21. A survey is taken of five individuals. What is the probability that three out of five individuals move during the year?

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