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A class has 3 tests. On the first test, μ = 47.6, σ = 10.2. The...

A class has 3 tests. On the first test, μ = 47.6, σ = 10.2. The second test μ = 47.8, σ = 8. On the third test, μ = 35.0 and σ = 11.1. What is the probability that a student scores over 150 points total?

(a) 0.252

(b) 0.473

(c) 0.875

(d) 0.125

Math   Statistics-And-Probability   
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