At a large university, 75% of the students are female. Suppose twelve students are selected at random. HINT: Show working wherever possible 1. What is the expected number of female students in the sample? (Round your answer to the nearest integer.) 2. What is the probability that between 2 and 6 of the students are female? (Round your answer to 4 decimal places.) 3. What is the probability that less than 5 of the students are female. (Round your answer to 4 decimal places.)

At a large university, 75% of the students are female. Suppose twelve students are selected at random. HINT: Show working wherever possible 1. What is the expected number of female students in the sample? (Round your answer to the nearest integer.) 2. What is the probability that between 2 and 6 of the students are female? (Round your answer to 4 decimal places.) 3. What is the probability that less than 5 of the students are female. (Round your answer to 4 decimal places.)

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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