A distribution of grades in an introductory statistics course (where A = 4, B = 3, etc) is: X 0 1 2 3 4 P (X) 0.1 0.17 0.21 0.32 0.2 Part a: Find the probability that a student has passed this class with at least a C (the student's grade is at least a 2).

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Mathematics

Bianca Ramsey

9 March, 15:03

A distribution of grades in an introductory statistics course (where A = 4, B = 3, etc) is: X 0 1 2 3 4 P (X) 0.1 0.17 0.21 0.32 0.2 Part a: Find the probability that a student has passed this class with at least a C (the student's grade is at least a 2).

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Helen Johnston · Answer 1

The probability that a student has passed this class with at least a C is 0.73

Step-by-step explanation:

A = 4 B = 3 C = 2 D = 1 E = 0

P (0) = 0.1

P (1) = 0.17

P (2) = 0.21

P (3) = 0.32

P (4) = 0.2

Probability that student passed this class with at least a C mean the score must be more than C

P (X/geq 2) = P (2) + P (3) + P (4) / /

P (X/geq 2) = 0.21 + 0.32 + 0.2//

P (X/geq 2) = 0.73