8.Research has revealed that forty percent of Internet company employees have stock options in theircompanies. Consider a random sample of 12 employees from an Internet company.(a) What is the probability that at least 7 employees have stock options in the company?(b) What is the mean number of Internet company employees who have stock options in theircompanies, in a sample of 12 employees?(c) What is the probability that at most 7 employees will not have stock in the company?{Hint: Note that "success" here has changed in problem (c.)}

Answered: Image /qna-images/answer/3298e976-4229-4f16-bd60-6b447611f807.jpg

Answered: 8. Research has revealed that forty…

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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The probability that a randomly selected 1-year-old male chipmunk will live to be 2 years old is 0.97211. (a) What is the probability that two randomly selected 1-year-old male chipmunks will live to be 2 years old? (b) What is the probability that seven randomly selected 1-year-old male chipmunks will live to be 2 years old? (c) What is the probability that at least one of seven randomly selected 1-year-old male chipmunks will not live to be 2 years old? Would it be unusual if at least one of seven randomly selected 1-year-old male chipmunks did not live to be 2 years old? (... (a) The probability that two randomly selected 1-year-old male chipmunks will live to be 2 years old is (Round to five decimal places as needed.) (b) The probability that seven randomly selected 1-year-old male chipmunks will live to be 2 years old is (Round to five decimal places as needed.) (c) The probability that at least one of seven randomly selected 1-year-old male chipmunks will not live to be 2 years…
Aunt Sally lives in the UK and frequently audio calls her relatives in Pakistan. Let’ssuppose that 55% of her audio calls were preceded by a voice note, and over the spanof the past year, she has made around 10 calls home. What is the probability that:a) At most 6 of the voice calls made were preceded by a voice note? (2)b) Exactly 6 voice calls were preceded by a voice note? (2)c) At least 6 of her voice calls were preceded by voice notes? (2)
An investigator is interested in examining if drinking wells are contaminated with a toxin, the toxin is found in 29% of the wells within the region. 7 drinking wells were examined, they have selected the 7 wells so they are far enough apart from one another so the results of one drinking well provides no information as to the status of any other well in the study. a) What is the probability that exactly 3 of the wells in the study are contaminated. b) What is the mean and standard deviation of the number of drinking wells in a sample of this size that are contaminated.
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