() A class consists of 80 students, 25 of them are girls and 55 boys, 10 ofthemare rich and remaining poor, 20 of them are fair complexioned. What is the probabilityof selecting a fair complexioned rich girl?(i) Explain why there must be a mistake in the following statement :A quality control engineer claims that the probability for a large consignment of glass brickscontaining 0, 1, 2, 3, 4, or 5 defectives are 0.11, 0.23, 0.37, 0.16, 0.09 and 0.05 respectively.

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Answered: () A class consists of 80 students, 25…

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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The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. Thank you!
A survey of athletes at a high school is conducted, and the following facts are discovered: 40% of the athletes are football players, 37% are basketball players, and 8% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that the athlete is either a football player or a basketball player? % (Please enter your answer as a percent)
8. A surgical technique is performed on seven patients. You are told there is a 60% chance of success. Find the probability that the surgery is successful for (a) exactly five patients, (b) at least five patients, and (c) at most two patients.
6. A survey by Altgeld Travel Magazine found that 85% of airline passengers prefer to sleep during their flights. Ifwe randomly select 9 passengers, what is the probability that…. (a) Exactly 8 passengers prefer to sleep during their flights? (b) 8 or more passengers prefer to sleep during their flights?
A couple plans to have four children. The father notes that the sample space for the number of girls the couple can have is 0, 1, 2, 3, and 4. He goes on to say that since there are five outcomes in the sample space, and since each child is eaually iikely to be a boy or girl, all five outcomes must be equally ieiy. Therefore, the probability of all four children being girls is 1/5. Explain the flaw in his reasoning. The argument is only correct if each child is equally likely to be a boy or girl. O The outcomes are not equally likely. O The sample space has less than 5 possible outcomes. O The sample space has more than 5 possible outcomes.
19. The chance for precipitation (rain) in Washington, DC this weekend is about 40% everyday. (a) What is the probability that it will rain on Friday, Saturday, and Sunday? (b) What is the probability that there won't be any rain day this entire weekend.
7. Aaron purchased 19 video games. The defect rate for these types of video games is 1.8%. What is the probability that at least three of the video games he purchased are defective?
a) A recent poll found that the mayor of a small town had the approval of 52% of the population. A new poll is being conducted one week before the election with a total of 324 randomly selected individuals. What is the probability that this poll finds the mayor’s approval below 50% ? b) It is estimated that 13.1% of Americans are left handed. What is the probability that a random sample of 100 Americans has between 10 and 15 left-handed people?
The probability that a trainee will remain with a company is 0.6. the probability that am employee earnsbmore than k10,000 per month is 0.5. the probability that an employee who is a trainee remained with the company or who earns more than k10,000 per month is 0.7. what is the probability that an employee earns more than k10,000 per month given that he is a trainee who stayed with the company

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