Review_Exam 3

Review_Exam 3 - Review Exam 3 1. The area under the...

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Review Exam 3 1. The area under the standard normal curve where P( Z < +1.52) is: a. .9357* b. .4357 c. .5643 d. .0643 2. The area under the standard normal curve where P(Z > +1.62) is: a. .8948 b. .4474 c. .0162 d. .0526* 3. The probability that an observation taken from a standard normal population will have a Z value less than 1.14 and greater than -1.14; or P( -1.14 < Z < +1.14) is: a. .8729 b. .5084 c. .7458* d. .9838 4. The probability that an observation taken from the standard normal population will have a Z value less than 2.40 and greater than 1.02 or P(1.02 < Z < 2.40) is: a. .0612 b. .7523 c. .1880 d. .1457* 5. The probability that an observation taken from a standard normal population will have a Z < -1 is: a. .9664 b. .1587* c. .3413 d. .0898 6. For a t distribution with sample size n = 21, what is the t-value such that 10% of the area under the t distribution is to the right of the t value a. 2.764 b. 1.325* c. 1.833 d. 2.228
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7. For a t distribution with sample size n = 21, what is the t-value such that 5% of the area under the t distribution is to the left of the t value a. 1.325 b. -1.725*
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This note was uploaded on 04/15/2011 for the course DSCI 2710 taught by Professor Hossain during the Spring '08 term at North Texas.

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Review_Exam 3 - Review Exam 3 1. The area under the...

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