Question

a) Assume Z is a random variable with a standard normal distribution and d is a...

a) Assume Z is a random variable with a standard normal distribution and d is a positive number. If P(Z>d)=0.15 then P( -d<Z<d)=0.7.

True or False

b) If Z is a random variable from a standard normal distribution and if P(Z>c)=0.27,then P(Z< -c)= 0.27

True or False

c) If Z is a random variable from a standard normal distribution and if P(Z <b)=0.66, then P(Z,< - b)=0.34

True or False

d) If X represents a random variable coming from a normal distribution and P(X < 9.9)=0.58, then P(X > 9.9) = 0.42

True or False

e) If X represents a random variable coming from a normal distribution with a mean of 4 and if P(X>6)=0.35 then P(4< X< 6)=0.15

True or False

  

Math   Statistics-And-Probability   
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