Q3. Approximately 20% of cars have been recalled for a manufacturer's defects but have not repaired. Twelve automobiles arechosen at random. What is probability that fewer than three of them have been recalled but not repaired?

Answered: Q3. Approximately 20% of cars have been…

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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Suppose that 33% of people in a certain city are on an online dating website. If three people are randomly chosen, what is the probability that all three are on an online dating website? Write your answer as a percent and round to the nearest hundredth of a percent.There is a _______ % chance the three randomly chosen people are on an online dating website.
В. Forty five percent of the streets in an area have private guards for security. Three streets are selected at random: i. What is the probability all three of the selected streets have private guards? What is the probability none of the three selected streets has private guards? What is the probability at least one of the selected streets has private guards? iv. ii. iii. What is the probability at most two of the selected streets have private guards?
In a certain town, 62% of the residents enjoy riding roller coasters. Alfred takes a sample of 75 residents from this town. What is the probability that fewer than 58% of the residents in the sample enjoy riding roller coasters? 0.238 0.433 0.714 0.762
cording to a job website, each job opening on average attracted 251 résumés in 2016. The job market improved in 2017 compared to 2016, which means that more people will likely be switching jobs but also fewer nemploved workers remain in the job market. To find out which trend is stronger, a random sample of 20 employers in a region was taken. Each employer reported how many résumés they received in 2017 for each b opening. Their answers are shown in the accompanying table. Using a = 0.10, complete parts a through d. Click the icon to view the data on résumés received, a. State the null and alternative hypotheses. Determine the null hypothesis, Ho, and the alternative hypothesis, H,. Job Opening Data Ho: H = 251 * 251 210 208 (Type integers or decimals. Do not round.) 219 251 b. Does this sample provide enough evidence to suggest that the number of résumés that were received in 2017 has 207 185 270 220 Identify the critical value. 283 225 205 232 217 206 (Round to two decimal places as…
Giorgio offers the person who purchases an 8-ounce bottle of Allure two free gifts, chosen from the following: an umbrella, a 1-ounce bottle of Midnight, a feminine shaving kit, a raincoat, or a pair of rain boots. If you purchased Allure, what is the probability you randomly select an umbrella and a shaving kit in that order? Multiple Choice 0.00 1.00 0.05 0.20
n 2010 about 69.6% of full-time law enforcement workers were sworn officers, and of those, 88.2% were male. Females, however, made up 60.8% of the civilian employees. Choose one law enforcement worker at random and calculate the following. The probability that the person is a female sworn officer. The probability that the person is a male civilian employee. The probability that he or she is male or a civilian employee.
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5B. John packs four t shirts for a trip to the beach. If he owns nine t shirts, four of which are black, and he randomly picks which four to pack, what is the probability that he packs the four black ones?
A bag of balloons contains 4 red balloons, 13 green balloons, 17 yellow balloons, and 7 orange balloons. What is the probability that a randomly selected balloon would be green or orange? A. 24/41 B. 20/41 C. 21/41 D. 30/41
A multiple-choice examination has 11 questions, each with five possible answers, only one of which is correct. Suppose that one of the students who takes the examination answers each of the questions with an independent random guess. What is the probability that he answers at least six questions correctly? a. 0.1064 O b. 0.2117 O C. 0.0117 O d. 0.3064 O e. 0.3117
In a group of 20 students, there are 12 boys and 8 girls. 4 of the boys play on the football team. What is the probability of choosing 1 student at random from the group who is NOT on the football team? A. 15 B. 23 C. 13 D. 45
n a large population, 46% of the households own DVD recorders. A simple random sample of 100 households from this population is to be contacted and the sample proportion computed. Which expression represents the probability that more than half the households sampled will own a DVD recorder?

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Q3. Approximately 20% of cars have been recalled for a manufacturer's defects but have not repaired. Twelve automobiles are chosen at random. What is probability that fewer than three of them have been recalled but not repaired?