Suppose 39% of questions on a major exam are from past exams. A random sample of 25 questions is selected. Assuming independence, answer the following binomial probability questions Report probabilities accurate to at least 4 decimal places. What is the probability that, of the 25 questions selected: a) exactly 9 are from past exams? b) none of them are from past exams? c) at least 10 are from past exams? d) at most 12 are from past exams?
Suppose 39% of questions on a major exam are from past exams. A random sample of 25 questions is selected. Assuming independence, answer the following binomial probability questions Report probabilities accurate to at least 4 decimal places. What is the probability that, of the 25 questions selected: a) exactly 9 are from past exams? b) none of them are from past exams? c) at least 10 are from past exams? d) at most 12 are from past exams?
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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