In a standard normal distribution, the probability that Z is less than zero is
Multiple Choice
-0.5
0.0
0.5
1.0
For the standard normal probability distribution, the total area under the curve is
Multiple Choice
0.0
0.5
1.0
3.0
The random variable x is known to be uniformly distributed between 50 and 100. The probability of x having a value between 70 to 95 is
Multiple Choice
.25
.50
.75
1.00
x is a normally distributed random variable with a mean of 24 and a standard deviation of 6. The probability that x is smaller than 12 is
Multiple Choice
.0228.
.0076
.9772
.9824
x is a normally distributed random variable with a mean of 10 and a standard deviation of 2. The probability that x is greater than 12 is
Multiple Choice
0.1587
0.4602
0.5398
0.8413
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