3.52 The taste test for PTC (phenylthiocarbamide) is a favorite exercise in beginning human genetics classes. It has been established that a single gene determines whether or not an individual is a "taster." If 70% of Americans are "tasters" and 20 Americans are randomly selected, what is the probability that a at least 17 are "tasters"? b fewer than 15 are "tasters"?

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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3.52 The taste test for PTC (phenylthiocarbamide) is a favorite exercise in beginning human genetics
classes. It has been established that a single gene determines whether or not an individual is a
"taster." If 70% of Americans are "tasters" and 20 Americans are randomly selected, what is
the probability that
a
at least 17 are "tasters"?
b fewer than 15 are "tasters"?
Transcribed Image Text:3.52 The taste test for PTC (phenylthiocarbamide) is a favorite exercise in beginning human genetics classes. It has been established that a single gene determines whether or not an individual is a "taster." If 70% of Americans are "tasters" and 20 Americans are randomly selected, what is the probability that a at least 17 are "tasters"? b fewer than 15 are "tasters"?
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