What is the probability exactly
In a certain town, 70 % people support the construction of a new ballpark. If 5 people are randomly selected, what is the probability exactly 2 of them supported it?
a) .490
b).132
c).230
d).168
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In the instructor's answer book for a mathematics text, 8% of the answers are incorrect. Use the Poisson approximation to express the probability that there are exactly 2 incorrect answers for a homework set with 50 problems.
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