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Suppose X is normally distributed with mean 21 and standard deviation 5, find: a) P (11 < X < 25) b) P (X < 16)

Suppose X is normally distributed with mean 21 and standard deviation 5, find:

a) P (11 < X < 25)

b) P (X < 16)

2) Suppose C and D are events such that P(C) = 0.7 and P(D) = 0.4. Can C and D be mutually exclusive events? Explain briefly.

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