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Stats Multiple Choice Questions

Question # 00012356
Subject: Statistics
Due on: 04/15/2014
Posted On: 04/15/2014 10:39 AM

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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

Tags questions choice multiple stats normal standard value variable probability blood preure question positive random distributionfind curve area males 031031196question 02090 09938099650005109949none precedingquestion 03770 is018081116147 is099040032016question 01255 23609918099870991109909none is007037097106question 007050758005279053980512question 90015871615866012question diastolic measurements 01496079100940607316none lt081

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Posted On: 04/15/2014 10:42 AM
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Tutorial Preview …z x 0 xx 0 5 x 7580 0 xxxx 0 xxxx x 512 xxxxxxxx 8 1 xxxx the areaunder xxx standard xxxxxx xxxxx for x = 2 xx 0 9918 x 9987 x xxxx 0 xxxx None of xxx preceding Question x 1 xxx xxxx positive xxxxx of X, xxx probability that x standard xxxxxx xxxxxxxx is xxxxxxx 0 and xxx is 0 xxxx The xxxxx…
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Preview: the xxxxxxxxxxx that x standard normal xxxxxxxx is between x and Z is x xxxx The xxxxx of Z is:0 070 xxx 971 06Question xxxx some xxxxx xxxxxx the xxxxxxxxxxx that a xxxxxxxx normal variable xx below Z is x xxxx The xxxxx of Z is:- 0 xxx 0 310 xxx 96Question xxxx x be.....
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