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Normal distribution witha mean of 8 and standard deviation of 0.3 What is, approximately, the probability that the pH meeasurement of a randomly selected water

Normal distribution witha mean of 8 and standard deviation of 0.3

What is, approximately, the probability that the pH meeasurement of a randomly selected water specime is greater than 8.2, and between 7.5 and 8.2?

0.7525 7 0.9902

0.2475 &0.3003

0.2525c&0.6997

0.7475 & 0.9522

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