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22. A student takes a 6 question multiple choice quiz with 4 choices for each question. If the
student guesses at random on each question, what is the probability that the student gets
exactly 3 questions correct?
A) 0.088
B) 0.0512
C) 0.132
D) 0.022
23. A coin is tossed 72 times. The standard deviation for the number of heads that will be
tossed is
A) 18
B) 4.24[COLOR="rgb(139, 0, 0)"]
[/COLOR]C) 6
D) 36