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Multiple choice problems based on the continuous probability distribution.

1.  An exponential probability distribution

a. is a continuous distribution

b. is a discrete distribution

c. can be either continuous or discrete

d. must be normally distributed

2.  Z is a standard normal random variable. What is the value of Z if the area to the right of Z is 0.9803?

a.-2.06

b.0.4803

c.0.0997

d.3.06

3.  The ages of students at a university are normally distributed with a mean of 21. What percentage of the student body is at least 21 years old?

a.It could be any value, depending on the magnitude of the standard deviation

b.50 percent

c.21 percent

d.1.96 percent

4.  Given that Z is a standard normal random variable. What is the value of Z if the area to the left of Z is 0.9382?

a.1.8

b.1.54

c.2.1

d. 1.77

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923222

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