In a big university with over 10,000 students, 20% of all students work full time. A random sample of 100 students is selected from the university. Let X denote the number of students who work full time in the sample. a) What is the probability distribution of X? b) Find p(x = 20), p(x ≤ 20), p(x ≥ 20), respectively. c) Find p(15 ≤ X ≤ 25) and p(15 < X < 25). d) Find the mean and standard deviation of X.

In a big university with over 10,000 students, 20% of all students work full time. A random sample of 100 students is selected from the university. Let X denote the number of students who work full time in the sample. a) What is the probability distribution of X? b) Find p(x = 20), p(x ≤ 20), p(x ≥ 20), respectively. c) Find p(15 ≤ X ≤ 25) and p(15 < X < 25). d) Find the mean and standard deviation of X.

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter9: Counting And Probability

Section9.3: Binomial Probability

Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...

See similar textbooks