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Answered

Statistics and Probability​

Statistics And Probability class=

Sagot :

CHU7S4EGO

Answer:

71% or 0.71

Step-by-step explanation:

according to the topic

P(x = 4) = 0.31

P (x = 3) = 0.40

so a student\s grade is B or better

P (x = 4) + P (x = 3) = 0.31 + 0.40 = 0.71

so the answer is 0.71 or 71%

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