STAT 400 Final: STAT400 ALL-SECTIONS SPRING2012 0000 FINAL SOL

• School: University of Maryland
• Department: Statistics and Probability
• Course: STAT 400
• Professor: All

Document Summary

May 16, 2012 stat 400 final exam [pilachowski] Note: while we"d like to guarantee that this answer key is 100% correct, there may be typos we missed in the proofreading. If you think an answer is wrong, check with your instructor or ta: (12 points) let x be a discrete random variable with probability mass function. 8: [4] find e(x). (do the calculations to get to an exact value numeric answer. ) Using symmetry of the probability distribution is also an acceptable method: [3] find v(x). (do the calculations to get to an exact value numeric answer. ) Because the probability distribution is symmetric, the median: [2] find the median of x. 5. 0: [3] find f(x), the cumulative distribution function of x. xf. 2 x: (12 points) let x be a continuous random variable with probability density function, [3] find e(x). (do the calculations to get to an exact value numeric answer. ) xf.