Twelve doctors work at a clinic, of which 3were trained at Harvard Medical School.Four doctors are randomly selected fromthe 12 clinic doctors to attend a specialconference.A. What is the probability that at least oneof the doctors going to the conference is aHarvard Medical graduate?B. Find the standard deviation for thenumber of doctors out of the 4 that weretrained at Harvard Medical School.

Number of doctors is(n(D))=12Number of harward university n(H)=3Number of doctors randomly…

Answered: A. What is the probability that at…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a taste test, people were given three cups of water to taste. Onewas bottled water and the other two were tap water. Mr. Bullards'class of 21 students participated in this experiment. Assuming youcannot tell the difference, what is the mean and standard deviationfor the number of correct guesses.
a. The standard deviation of 25 scores is 10, the mean is 29, the median is 24 and the mode is 23. What is the coefficient of skewness? Describe the distribution. b. The following are scores of 8 students in Algebra: 89, 88, 77, 84, 83, 92, 91 and 96. Find the coefficient of skewness.
b. In proof testing of circuit boards, the probability that any particular diode will fail is 0.01. Suppose a circuit board contains 200 diodes. I. How many diodes would you expect to fail, and what is the standard deviation of the number that are expected to fail. II. What is the probability that at least four diodes will fail on a randomly selected board. III. If six boards are shipped to a particular customer, what is the probability that at least four of them will work properly.
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5. The probabilities of a machine manufacturing 0, 1, 2, 3, 4, and 5 defective parts in one day are 0.75, 0.17, 0.04, 0.025, 0.01, and 0.005 respectively. Find the mean of the probability distribution.
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only c please
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Suppose that the distance of fly balls hit to the outfielder ( in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet. We randomly sample 49 fly balls.a. In words define the random variable. X________.b. What is the probability that the 49 balls traveled an average at least of 240 feet. Include a complete shaded graph, and write the probability statement. c. Find the 90th percentile of the distribution of the average of 49 fly balls.

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A. What is the probability that at least one of the doctors going to the conference is a Harvard Medical graduate? B. Find the standard deviation for the number of doctors out of the 4 that were trained at Harvard Medical School.