Find the Mean of the Binomial Random Variable

question 47

Multiple Choice

Find the mean of the binomial random variable. Round to two decimal places when necessary.
-A die is rolled 4 times and the number of times that two shows on the upper face is counted. If this experiment is repeated many times, find the mean for the random variable X, the number of twos.

• A)3.33
• B)0.67
• C)1.33
• D)1

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