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The results of a blood test at a medical laboratory are normally distributed with =60 and =15. a)What is the probability that a blood test

The results of a blood test at a medical laboratory are normally distributed with

=60 and =15.

a)What is the probability that a blood test chosen randomly from these data has a score greater than 90?

b)What percent of these blood tests will have results between 50 and 80?

c)How low must a score be to lie in the lowest 5% of the results?

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