The length of time it takes students to complete a statistics examination is uniformly distributed and varies between 80 and 120 minutes. Find the mathematical expression for the probability density 9. а. function. Compute the probability that a student will take between 90 and 100 minutes to complete the examination. b. Compute the probability that a student will take no more than 80 minutes to complete the examination. С. d. What is the expected amount of time it takes a student to complete the examination? е. What is the standard deviation for the amount of time it takes a student to complete the examination?

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