23. A group of college freshmen were polled on the courses in which they were registered for their first semester ofschool. One hundred fourteen registered for English, ninety registered for math, and sixty registered for biology.Seventy-nine registered for both English and math, thirty-five registered for math and biology, and forty-fourregistered for English and biology. Twenty-eight freshmen registered for English, math, and biology, while tenfreshmen did not register for any of the three courses listed.a) How many freshmen were surveyed?b) What is the probability that a random freshman from this group registered only for math?c) What is the probability that a random freshman from this group registered for biology or English?

Introduction: The study involved some college freshmen regarding the course they registered for in…

Answered: 23. A group of college freshmen were…

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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Los Angeles Dodgers. From the official website of the 2013 Los Angeles Dodgers major league baseball team, we found that there were ve active players on roster available to play outfield. Assuming that these five players could play any outfield position, how many possible assignments could manager Don Mattingly have made for the three outfield positions?
To help plan the number of meals to be prepared in a college cafeteria, a survey was conducted, and the following data were obtained. 130 students ate breakfast. 177 students ate lunch. 276 students ate dinner. 65 students ate breakfast and lunch, 115 students ate breakfast and dinner. 86 students ate lunch and dinner. 54 students ate all three meals. How many students ate (a) At least one meal in the cafeteria? students (b) Exactly one meal in the cafeteria? students (c) Only dinner in the cafeteria? students (d) Exactly two meals in the cafeteria? students ***
3.A senior high school has, 5,000 students enrolled for academic year 2016-2017. Of these, 1200 are majoring STEM, 1,500 are ABM, 700 are HUMSS, and the remaining are GAS. A.What percent of the enrollees take HUMSS? B.What percent has chosen a major which is not HUMSS or ABM? C.What percent are enrolled to GAS?
To help plan the number of meals to be prepared in a college cafeteria, a survey was conducted, and the following data were obtained. 127 students ate breakfast.183 students ate lunch.272 students ate dinner.60 students ate breakfast and lunch.111 students ate breakfast and dinner.90 students ate lunch and dinner.53 students ate all three meals. How many students ate (a) At least one meal in the cafeteria? students(b) Exactly one meal in the cafeteria? students(c) Only dinner in the cafeteria? students(d) Exactly two meals in the cafeteria? students
We are choosing participants for a panel discussion on allowing alcohol on a university campus. We must choose 2 administrators from a group of 8 administrators and 2 students from a group of 12 students. How many different panels can be formed?
of 900 people interviewed 254 said they like only hamburgers, 461 said they only like hot dogs, and 140 people said they liked both hamburgers and hotdogs. How many people interviewed didn’t like either?
A survey of 500 television watchers produced the following information: 285 watch football games, 195 watch hockey games, 115 watch basketball games, 45 watch football and basketball games, 70 watch football and hockey games, 50watch hockey and basketball games, and 50 do not watch any of the three kinds of games. How many people in the survey watch all three kinds of games? * 35 25 20 40
The Denver Police Department wants to improve its image with teenagers. A uniformed officer is sent to a school 1 day a week for 10 weeks. Each day the officer visits with students, eats lunch with students, attends pep rallies, and so on. There are 18 schools, but the police department can visit only half of these schools this semester. A survey regarding how teenagers view police is sent to all 18 schools at the end of the semester. (Select all that apply.) a) After the police visits, survey 9 of the schools to see if there is a difference in views between the two groups.b) No placebo is being used.c) Use random selection to pick 18 schools to visit.d) After the police visits, survey all the schools to see if there is a difference in views between the two groups.e) A placebo is used for the remaining 9 schools.f) Use random selection to pick nine schools to visit.
Isabel has two ways to travel from her home in Norco to her office in Los Angeles. One is to go via the 10 Freeway, and the other is to go via 60 Freeway. In order to determine which way she should travel on a daily basis, Isabel has recorded the travel times for samples of eight trips via the 10 Freeway and eight trips via the 60 Freeway. The following table gives the travel timnes (in minutes) for the sixteen trips. Travel times in minutes 10 Freeway 71, 68, 72, 72, 73, 71, 66, 76 60 Freeway 67, 75, 69, 75, 75, 81, 71, 72 Send data to calculator Send data to Excel Assume that the two populations of travel times are normally distributed and that the population variances are equal. Can we conclude, at the 0.01 level of significance, that u,, the mean travel time via the 10 freeway, is different from u,, the mean travel time via the 60 freeway? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your…
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