Stats Multiple Choice Questions
Question 1
1. Let X be a random variable with the standard normal distribution.
Find: P(-1.56 X <-0.81). /
0.1496
0.7910
0.9406
0.7316
None of the above
Question 2
1. Diastolic blood pressure measurements of 100 adult males is distributed as X ~ N(m = 84,s 2 = 36) .How many males are at risk of high blood pressure (blood pressure above 90)?
0.1587
16
15.8660
12
Question 3
1. Let X be a random variable with the standard normal distribution.Find: P(X > 1.23).
0.8907
0.1093
0.9032
0.8849
None of the above
Question 4
1. For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.3340. The value of Z is:
0.07
0.37
0.97
1.06
Question 5
1. For some value of Z, the probability that a standard normal variable is below Z is 0.2090. The value of Z is:
- 0.81
- 0.31
0.31
1.96
Question 6
1. Let X be a random variable with the standard normal distribution.Find: P(X <- 2.57). .
0.9938
0.9965
0.0051
0.9949
None of the above
Question 7
1. Find the area under the standard normal curve for z = 0.07.
0.5
0.7580
0.5279
0.5398
0.512
Question 8
1. Find the area under the standard normal curve for z = 2.36.
0.9918
0.9987
0.9911
0.9909
None of the preceding
Question 9
1. For some positive value of X, the probability that a standard normal variable is between 0 and +2X is 0.1255. The value of X is:
0.99
0.40
0.32
0.16
Question 10
1. For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.3770. The value of Z is:
0.18
0.81
1.16
1.47
-
Rating:
5/
Solution: Stats Multiple Choice Questions with Step by step Solution