A-A fair die is rolled 36 times. What is the standard deviation of the even number (two,

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Question:

A-A fair die is rolled 36 times. What is the standard deviation of the even number (two, 4 or six) outcomes?
A. 18
B. 6
C. 4
D. 3

B-A fair die is rolled 10 times. What is the probability that an odd number (one, 3 or five) will occur less than 4 times?
A. 0.1719
B. 0.1172
C. 0.2051
D. 0.3770
E. 0.0439