Problem 9Back at Tinker Air Force Base, an aircraft seam requires 25 rivets during an MRO operation. Theseam will have to be reworked if any of these rivets is defective. Suppose rivets are defectiveindependently of one another, each with the same probability.a. If 20% of all seams need reworking, what is the probability that a rivet is defective?b. How small should the probability of a defective rivet be to ensure that only 10% of allseams need reworking?

If an event A is not affected by the occurrence of another event B then events A and B are said to…

Answered: Back at Tinker Air Force Base, an…

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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ATV show, Lindsay and Tobias, recently had a share of 15, meaning that among the TV sets in use, 15% were tuned to that show. Assume that an advertiser wants to verify that 15% share value by conducting its own survey, and a pilot survey begins with 12 households having TV sets in use at the time of a Lindsay and Tobias broadcast. a. Find the probability that none of thelhouseholds are tuned to Lindsay and Tobias. (Round to three decimal places as needed.)
Five plants are operated by a garment manufacturer. They feel there is a fifteen percent chance for a strike at any one plant and the risk of a strike at one plant is independent of the risk of a strike at another plant. Let X be the number of plants of the garment manufacturer that strike. Step 1 of 3 : Compute the probability that 33 of the plants will strike. Round your answer to four decimal places, if necessary.
Suppose the reliability of a bulb in a projector is 95%. If the bulb fails, the backup bulb can be used. The reliability of this bulb is only 80%. What is the probability that a projector will be useful given the main and the backup bulb? 100% 0.99 O 0.76 O 0.9580
About 8% of the U.S. population catches the flue each season. Assuming everyine h?as equal probability of cathcing the flu, about what are the odds of catching the flu in any given season?
R. H. Bruskin Associates Market Research found that 40% of Americans do not think that having a college education is important to succeed in the business world. If a random sample of five Americans is selected, what is the probability that At most 3 people will agree with that statement. Select one: a. 1 O b. 0.913 c. 0.8 O d. 0.7
Suppose a math class contains 41 students. There are 18 females (three of whom speak Spanish) and 23 males (six 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? 4. If someone does not speak Spanish what is the probability they are female?
A typical fuel tanker can carry up to 40,000 L of fuel and can be loaded in about 20 minutes. The shift supervisor comes to check on one of the tankers, not knowing how much time is left in the fill process. a. What is the probability that there is less than 5,000 L remaining? b. What is the probability that there is between 15,000 L and 25,000 L of fuel remaining? c. What volume of fuel would the shift supervisor expect the tanker to contain? L
Suppose a math class contains 37 students. There are 19 females (six of whom speak Spanish) and 18 males (five 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? 4. If someone does not speak Spanish what is the probability they are female?
Suppose a large consignment of compact discs contained 7% defectives. If a sample of size 322 is selected, what is the probability that the sample proportion will differ from the population proportion by less than 3%? Round your answer to four decimal places.
1. In a factory that produces pieces of ready-made concrete, if the percentage of production of defective blocks is 0.6, if we draw a sample of 5 pieces: find the probability of getting 3 defective pieces. *

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