A doctor's office sends half of its lab work to Lab X, one-fourth of its lab work to Lab Y, and the remainder to Lab Z. From Lab X, 1report in 10 is late, from Lab Y, 1 in 8 is late, and from Lab Z. 1 in 12 is late. What is the probability that a late lab report came fromLab Y?A) 0.031B) 0.0210.304D) 0.050

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Answered: A doctor's office sends half of its lab…

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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3) In a recent semester at a local university, 530 students enrolled in both General Chemistry and Calculus I. Of these students, 53 received an A in general chemistry, 83 received an A in calculus, and 25 received an A in both general chemistry and calculus. Find the probability that a randomly chosen student received an A in general chemistry or calculus.
A blood bank asserts that a person with type O blood and a negative Rh factor (Rh−) can donate blood to any person with any blood type. Their data show that 49% of people have type O blood and 17% of people have Rh− factor; 52% of people have type O or Rh− factor. A. Find the probability that a person has both type O blood and the Rh− factor. B. Find the probability that a person does NOT have both type O blood and the Rh− factor.
You are an accountant who is performing the annual audit at Hokem, Billem, and Soakem, a large telephone company. From past experience, it is known that 8% of the accounts at Hokem, Bilem, and Soakem has errors. a) what is the probability that the first account with an error is among the first 5 accounts that you check?
The prevalance of mild myopia (nearsightedness) in adults over age 40 is 27% in the US. Suppose eight adults over age 40 are chosen at random from the population; let Y denote the number of adults with mild myopia. Which of the following can be used to find the probability that 3 of them have mild myopia? [Select all that apply (i.e. you may select 1 or more answers)] A. pbinom(3, 8, 0.27) OB. dbinom(3, 8, 0.27) OC. 1-pbinom(3, 8, 0.27) OD. 56(0.27) 5 (0.73)³ OE. 3(0.27) ³ (1 - 0.27)5 OF. (0.27)³ (0.73)5
Suppose that the rats on the campus of Hypothetical U are found to be carriers of bubonic plague. Eradicating the rats has an estimated cost of $1,000,000 and is expected to reduce the probability a given student dies of the plague from 1/3,000 to zero. Suppose that there are 30,000 students on campus. Suppose further that the administration refuses to eradicate the rats due to the cost. From this information, we can estimate that the administration's willingness to pay to save a student statistical life is no more than $100,000 $1,000,000 $50,000 $33,333
Suppose that each time Bar-bie throws a dart, she has a 3/4 probability of getting a bullseye. If Barbie shoots three darts, what is the probability that she gets a bullseye on at least two of them?
25)
1. Twelve electric bulbs are drawn independently every hour from a production line at a factory. The number of defective bulbs are random and independent. Suppose that the probability that a bulb is defective is 0.06. a. What is the probability that less than two bulbs are defective? b. What is the probability that three bulbs tested are the second defective bulbs detected?
Based on a Comcast survey, there is a 0.8 probability that a randomly selected adult will watch prime-time TV live, instead of online, on DVR, etc. Assume that seven adults are randomly selected. Find the probability that fewer than three of the selected adults watch prime-time live. OA. 0.00430 B. 0.000358 OC. 0.0512 O D. 0.00467
o. In a certain region of the country it is known From past experience that the probability of sele Cting an adult over 40 years of age with cancer is 0:05. If the probability of a doctor correctly diagnosing a person with cancer as having the di sease is 0-18 and the probability of incorrectly diagrosing a person without cancer as having the disease is 0.00 a. What is the probability that an adult over 40 yearı of age is diagnos ed as having Cancer ? b. what is the prooability that a person diagnosed as having cancer actually has the disease?
The health of two independent groups of 10 persons each is being studied for 6 months. The probability anyone individual in either group drops out before the end of the 6 months is 0.2 (independent of the otherparticipants). What is the probability at least 9 persons finish the study in either one of the two groups butnot in both groups?

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