Sample Multiple Choice

# Sample Multiple Choice - Stat 511 Sample Multiple Choice...

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Stat 511 Sample Multiple Choice Questions 1. If the probability density function of a continuous random variable X is () fx .5 0 2 0 otherwise xx  then, (1 1.5) Px is A. .5625 B. .3125 C. .1250 D. .4375 2. If the probability density function of a continuous random variable X is 2 0 2 0 otherwise kx x then the value of k is A. 2 B. .25 C. .375 D. any positive value greater than 2 3. A continuous random variable X is uniformly distributed over the interval [10, 16]. The expected value of X is A. 16 B. 13 C. 10 D. 7 4. Which of the following statements are correct? A. If the random variable X is normally distributed with parameters and , then the mean of X is and the variance of X is . B. The cumulative distribution function of any standard normal random variable Z is ( ) ( ). P Z z z   C. The standard normal distribution does frequently serve as a model for a naturally arising population. D. The standard normal probability table can only be used to compute probabilities for normal random variables with parameters 0 and 1.

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## This note was uploaded on 04/23/2011 for the course STAT 503 taught by Professor Staff during the Spring '08 term at Purdue.

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Sample Multiple Choice - Stat 511 Sample Multiple Choice...

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