1. Given events A and B from the same sample space and: P(A) = 0.2, P(B)...

1. Given events A and B from the same sample space and:

P(A) = 0.2, P(B) = 0.6, P(A and B) = 0.1. Find the probability: P(A or B).

2. The scores of the class have a normal distribution with a mean of 77 and a standard deviation of 8. Find the 80^th percentile score.

a) 85 b) 0.375 c) 83.7 d) 84.8

Expert Solution

Solution

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orchestra answered 2 years ago

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