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1) If normal random variable from a normally distributed population with mean 21 and standard deviation 4, is 15. The value of standard normal random
1) "If normal random variable from a normally distributed population with mean 21 and standard deviation 4, is 15. The value of standard normal random variable will be ____________"
a) -1.5
b) 1.5
c) 2.4
d) -2.4
2) A Project Manager determined that T is a continuous random variable indicating the project completion time. Find expected value of project completion time. The probability density function (PDF) of T , i.e. f(t) is given by : "
a) 0.674
b)0.567
c) 1
d) 0.775
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