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Consider taking a multiple choice exam with 25 questions and 5 possible answers per question. Assuming...

Consider taking a multiple choice exam with 25 questions and 5 possible answers per question. Assuming you randomly guess, let Y = number of questions out of the 25 you get right.

a. What is the distribution TYPE for Y? Be sure to give values for its parameters.
b. Give the functional form of the pmf for Y.
c. In tabular form, write out the pmf of Y.
d. Give the histogram for the pmf of Y.
e. Find the mean of Y.
f. Find the standard deviation of Y.

Math   Statistics-And-Probability   
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