QUESTION 1The grades on a test can be A,B,C,D, or F, encoded by the numbers 4,3,2,1 and 0 respectively (so A=4, B=3, and so on). Consider the random variable X = number grade of a student. The followingrecords the number of students with each score:1Then:(a) The probability that a randomly chosen student from the class got B is(b) The probability that a randomly chosen student from the class got C or higher is

Here Given Total Number of students=1+3+8+7+6=25

Answered: Then: (a) The probability that a…

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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Then: (a) The probability that a randomly chosen student from the class got B is (b) The probability that a randomly chosen student from the class got C or higher is