X~N (? = 30 and ?2 = 100) has a normal distribution, a) What is the probability that X is between 30 and 50? b) What is the probability that X is between 20 and 40? c) What is the probability that X is between 35 and 45? d) What is the probability that X is less than 25? e) What is the probability that X is greater than 20?

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X~N (? = 30 and ?2 = 100)   has a normal distribution,

a) What is the probability that X is between 30 and 50?

b) What is the probability that X is between 20 and 40?

c) What is the probability that X is between 35 and 45?

d) What is the probability that X is less than 25?

e) What is the probability that X is greater than 20?

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