13. A company uses a 'selling aptitude test in the selection of salesmen. Pastéxperience has shown that only 70% of all persons applying for a sales position achieved aclassification "dissatisfactory" in actual selling, whereas the remainder were classified as"satisfactory", 85% had scored a passing grade on the aptitude test. Only 25% of thoseclassified unsatisfactory, had passed the test on the basis of this information. What is theprobability that a candidate would be a satisfactory salesman given that he passed theaptitude test?G a

Conditional Probability: Let A and B be two events with P(A) > 0. Then the conditional…

Answered: M3. A company uses a 'selling aptitude…

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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According to a study done by a university student, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267. Suppose you sit on a bench in a mall and observe people's habits as they sneeze. (a) What is the probability that among 16 randomly observed individuals exactly 8 do not cover their mouth when sneezing? (b) What is the probability that among 16 randomly observed individuals fewer than 4 do not cover their mouth when sneezing? (c) Would you be surprised if, after observing 16 individuals, fewer than half covered their mouth when sneezing? Why? (a) The probability that exactly 8 individuals do not cover their mouth is 0.19 (Round to four decimal places as needed.) (b) The probability that fewer than 4 individuals do not cover their mouth is 0.76. (Round to four decimal places as needed.) (c) Fewer than half of 16 individuals covering their mouth would not be surprising because the probability of observing fewer than half covering their…
A certain bridge in Cebu is being re-constructed. The civil engineers would like to consider the number of heavy-duty vehicles that pass through that certain bridge in re-designing. The industrial engineers are tasked to do the job in finding the probability that certain number of heavy-duty vehicles pass through the bridge in a specific period of time. The IEs collected the data below. The IE would like to know if queuing theory is applicable in simulating the number of heavy-duty vehicles that pass through the bridge. One condition of using queuing theory is that the data must be Poisson distributed. Test at 1% level of significance if the data is collected by the IE is Poisson distributed.
According to a study done by a university student, the probability a randomly selected individual will not cover his or her mouth when sneezing is 0.267.Suppose you sit on a bench in a mall and observe people's habits as they sneeze. (a) What is the probability that among 16 randomly observed individuals exactly 5 do not cover their mouth when sneezing? (b) What is the probability that among 16 randomly observed individuals fewer than 4 do not cover their mouth when sneezing? (c) Would you be surprised if, after observing 16 individuals, fewer than half covered their mouth when sneezing? Why? (a) The probability that exactly 5individuals do not cover their mouth is nothing. (Round to four decimal places as needed.) (b) The probability that fewer than 4 individuals do not cover their mouth is nothing. (Round to four decimal places as needed.)
It is known that the customers of a hotel are 0.68 percent satisfied with the hotel. Accordingly, what is the probability of asking 10 people about their satisfaction level so that satisfied customers can be selected from 10 hotels?
A psychology teacher teaches two statistics classes back-to-back, lecture L1 at 09:00 am and lecture CL1 at 10 am. Suppose the probability that the instructor gives a good L1 lecture is 0.25. If L1 lecture is good, then CL1 lecture is also good with probability 0.50. However, if L1 lecture is bad, then there is an 90% chance that CL1 lecture will also be bad. a) What proportion of the CL1 lectures are good? b) Suppose CL1 lecture was good. What is the probability that L1 lecture was also good? c) What is the probability that at least one lecture is good (i.e., either L1 lecture is good or CL1 lecture is good, or both)?
The president of Doerman Distributors, Inc., believes that 28% of the firm's orders come from first-time customers. A simple random sample of 100 orders will be used to estimate the proportion of first-time customers. What is the probability that the sample proportion will be between 0.16 and 0.40 (to 4 decimals)? What is the probability that the sample proportion will be between 0.21 and 0.35 (to 4 decimals)?
What is the probability that more than 7 shoppers from this sample felt that regifting was socially acceptable?
The article “Unmarried Couples More Likely to Be Interracial” (San Luis Obispo Tribune, March 13, 2002) reported that 7% of married couples in the United States are mixed racially or ethnically. Consider the population consisting of all married couples in the United States. When the n = 200, what is the probability that the proportion of couples in the sample who are racially or ethinically mixed will be greated than .10?

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