Suppose that about 13% of the population is left-handed. A 200-seatschool auditorium has been built with 15 "lefty seats," seats thathave the built-in desk on the left rather than the right arm of thechair. (For the right-handed readers among you, have you ever triedto take notes in a chair with the desk on the left side?) In a class of90 students, what's the probability that there will not be enoughseats for the left-handed students?

The question is about normal approximation.Given :Population proportion of left handed people ( p )…

Answered: Suppose that about 13% of the…

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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4. At a High school, 70% of the seniors have taken an advance calculus course. Of those who have taken Advanced Calculus, 60% will apply for a Pre-Health science major when they apply for college admission. Of those who have not taken advanced calculus, 40% will apply for a Pre-Health science major when they apply for college admission. A senior is selected at random. What is the probability that the senior have taken advanced calculus, given that the senior will apply for a pre-health science major?
According to a recent article on the website www.fivethirtyeight.com, 30% of Americanssay they’re trying to reduce or eliminate gluten in their diets. Suppose you have 50volunteers and are interested in the number of them that are trying to reduce oreliminate gluten in their diets.a.) Find the probability that exactly 20 of the volunteers are trying to reduce oreliminate gluten in their diets. Use the formula.b.) Find the probability that 15 or fewer of the volunteers are trying to reduce oreliminate gluten in their diets. Use the calculator.c.) Find the probability that at least 27 of the volunteers are trying to reduce oreliminate gluten in their diets. Use the calculator.
Approximately 20% of U.S. workers are afraid that they will never be able to retire. Suppose 10 workers are randomly selected. a. What is the probability that none of the workers is afraid that they will never be able to retire?
A random student will be selected from the College of Engineering. The number of male (B) and female (G) students in each department are as follows: For Civil Engineering (C) it is 43 and 15 respectively; for Electronics and Electrical engineering (E), it is 32 and 19 respectively; and for Mechanical Engineering (M), its 23 and 8 respectively. A. What is the probability that the student is male ME student or an EE student? B. What is the probability that the student is female given that she is not an ME student? C. What is the probability that the student is either a female or a CE student? D. What is the probability that the student is a male given that he is a CE student?
Suppose 50% of the students in school have a part time job. Among those who have a partime job, 20% of them need to work at least 20 hours per week. If you randomly select a student in school, what’s the probability that the student does not work or works less than 20 hours per week?
In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. (No two respondents were from the same household.) Among the respondents, 211answered "none,"289 said "one," 373 said "two," 143 said "three," and 138 responded with four or more. A survey respondent is selected at random. Find the probability that his/her household has four or more cell phones in use. Is it unlikely for a household to have four or more cell phones in use? Consider an event to be unlikely if its probability is less than or equal to 0.05.
A survey from Teenage Research Unlimited found that 40% of teenage consumers receive theirspending money from part-time jobs. If 5 teenagers are selected at random:a. Find the probability that at least 3 of them will have part-time jobs.b. Find the probability that no more than 4 will have part-time jobs.c. Find the probability that less than 5 but greater than 3 will have part-time jobs.
In a survey of 1200 college students living in the dorms, 600 said that they had only a tablet in their rooms, 400 said that they had only laptop in their rooms, and 150 said that they had both a tablet and a laptop in their rooms. The remaining 50 students had neither. If a student is randomly chosen from this group, the probability that the student does have a laptop given that the student has a tablet is
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?

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