3. Approximately 3.5 percent of all children born in a certain region are from multiple births (that is, twins, triplets,etc.). Of the children born in the region who are from multiple births, 22 percent are left-handed. Of the childrenborn in the region who are from single births, 11 percent are left-handed.(a) What is the probability that a randomly selected child born in the region is left-handed?(b) What is the probability that a randomly selected child born in the region is a child from a multiple birth,given that the child selected is left-handed?(c) A random sample of 20 children born in the region will be selected. What is the probability that the samplewill have at least 3 children who are left-handed?

Answered: 3. Approximately 3.5 percent of all…

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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21. A survey involving 600 Democrats, 400 Republicans and 200 Independents asked the question: "Do you favor or oppose eliminating taxes on dividends paid to shareholders?" The following results were obtained: Answer Democrats, % Republicans, % Independents, % Favor 29 66 48 Орpose 71 34 52 What is the probability that a person selected at random from this survey answered "favor"?
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?
3. An airline tracks data on the flight arrivals. Over the past 6 months, 65 flights on one route around early, 130 arrived on time, 15 were late, and 30 were cancelled. A. What is probability the flight is early? On time? Late? Canceled? B. Are thes outcomes exclusive? C. What id the probability that a flight is either early or on time?
Eleven percent of American children (ages 4 to 17) have Attention Deficient Hyperactivity Disorder (ADHD) according to the Center for Disease Control. Suppose six American children in this age group are randomly selected, is the probability that at least one has ADHD unusual? Eleven percent of American children (ages 4 to 17) have Attention Deficient Hyperactivity Disorder (ADHD) according to the Center for Disease Control. Suppose six American children in this age group are randomly selected, is the probability that at least one has ADHD unusual? No, this probability is not unusual because it is more than 0.05. Yes, this probability is unusual because it is more than 0.05. No, this probability is not unusual because it is within 2 standard deviations of the mean. Yes, this probability is unusual because it is not within 2 standard deviations of the mean. No, this probability is not unusual because it is more than 0.01.
Suppose a population consists of 10 items, four of which are classified as defective and six of which are classified as non-defective. What is the probability that a random sample of size three will contain two defective items?
In a study by the Department of Transportation, there were a total of 89 drivers that were pulled over for speeding. Out of those 89 drivers, 39 were men who were ticketed, 15 were men who were not ticketed, 3 were women who were ticketed, and 32 were women who were not ticketed. Suppose one person was chosen at random. (a) What is the probability that the selected person is a man who was not ticketed? Answer: (b) What is the probability that the selected person is a woman or someone who was ticketed? Answer:
b. In a survey of 99 families in Karachi, 45 were low income families who at some point in time were involved in electricity theft. 13 were low income families who never did any violation. 16 were high income families who involved in electricity theft, and 25 high income families never did any violation. If One of these subject is randomly selected, what is the probability of: i. Low income families or someone who did electricity theft. ii. Low income families or someone who did not do violation. iii. High income families or someone who did electricity theft.
5
Coronary bypass surgery: A healthcare agency reported that 54% of people who had coronary bypass surgery in 2008 were over the age of 65. Sixteen coronary bypass patients are sampled. (a)What is the probability that exactly 10 of them are over the age of 65? (b)What is the probability that more than 11 are over the age of 65? (c)What is the probability that fewer than 7 are over the age of 65? (d)Would it be unusual if all of them were over the age of 65? Use a cutoff of 0.05. Thank you!
a. One out of four mini-vans sold by a nationwide auto dealer has a hidden defect in its transmission. i. What is the probability that a randomly selected purchaser of two mini-vans will wind up with at least one mini-van with a defective transmission? ii. What is the probability that a randomly selected purchaser of two mini-vans will wind up with exactly one mini-van with a defective transmission?
In 2014, the percentage of the U.S. population that speak English only in the home is 78.9%. Choose 15 U.S. people at random. What is the probability that exactly one-third of them speak English only? At least one-third? What is the probability that at least 9 do not speak English in the home?
Twenty five percent of the employees of a company have a bachelor's degree. Of those, 35% are in a supervisory position. Of those who do not have a bachelor's degree, 18% are in a supervisory position. What is the probability that a random selected employee is in a supervisoryposition? What is the probability that a randomly selected supervisor has a bachelor's degree?

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