On a test to obtain a securities license there are 20 questions with possible answers A, B, C, D, & E. Getting 70% (or 14 out of 20) correct is necessary to pass. A student is certain he knows 10 but must guess on the other 10. What is the probability of getting at least 4 correct by guessing on the 10? 0.0328 0.8791 0.1209 0.9672

On a test to obtain a securities license there are 20 questions with possible answers A, B, C, D, & E. Getting 70% (or 14 out of 20) correct is necessary to pass. A student is certain he knows 10 but must guess on the other 10. What is the probability of getting at least 4 correct by guessing on the 10? 0.0328 0.8791 0.1209 0.9672

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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