4. In a college, there are 150 students taking courses in Mathematics, Physics and Economics.Among the students, 92 are females. There are 48 students taking Mathematics which 28 arefemales. Half of the 68 students taking Physics are females.(a) Construct the contingency table for the given data.(b) A student is chosen at random. Find the probability that the student(i)takes Economics,(ii)is a male, given that he takes Economics,(iii)takes Economics or a female.(c) Two students are chosen at random, find the probability that at least one student takesEconomics.

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Answered: 4. In a college, there are 150 students…

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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Q2
n a large population, 46% of the households own DVD recorders. A simple random sample of 100 households from this population is to be contacted and the sample proportion computed. Which expression represents the probability that more than half the households sampled will own a DVD recorder?
Use the following table for the next two questions. The following data represent the number of male and female students enrolled in nursing at the University of Oklahoma Health Sciences Center for a recent semester. A student is selected at random. Find the probability of each event. Nursing majors 180 1010 1190 Males Females Totals 23. The student is a male or nursing majors? (a) 1.0222 (b) 0.6200 (c) 0.6101 (d) 0.5750 Non-nursing majors 1110 1700 2810 Totals 1290 2710 4000 (e) 0.0450 24. Given that the selected student is female, find the probability that the student is a nursing major? (e) 0.1200 (a) 0.0380 (b) 0.2525 (c) 0.3727 (d) 0.9772
Among a student group 51% use Google Chrome, 20% Internet Explorer, 10% Firefox, 5% Mozilla, and the rest use Safari. What is the probability that you need to pick 7 students to find 2 students using Google Chrome? Report answer to 3 decimals.
2) The probability that a randomly selected student is female given that the student received a business degree, is
A lock consists of 3 dials, where each dial has 4 letters. What is the probability of guessing the right combination in one try? Kay has an 80% probability of making a free-throw in basketball, and each free-throw is independent. Kay gets to take 2 free-throws and must make both to win the game. What is the probability that Kay's team will win the game? Two owners of a cattle ranch, Jo and Val, want to find the average weight for the ranch’s 200 cows. Instead of weighing all of the cows: Jo weighs 25 cows and gets an average weight of 1,350 pounds (stdev 50) Val weighs 100 cows and gets an average weight of 1,420 pounds (stdev 50) What is Jo’s margin of error, rounded to the nearest whole number? (The formula is )
Mm2

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