Mathematics, 21.04.2021 23:30 Geo777

The time it takes students to complete a biology final exam is a random variable having a normal distribution with mean
160 minutes and standard deviation 15 minutes.
A, B, C and D are four friends taking this exam. What is
the probability that at least one of them will complete the
exam in less than 145 minutes? (Assume their completion
times are independent.)

The time it takes students to complete a biology final exam

is a random variable having a normal

Answers: 3

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