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3 years ago

8

According to a commercial, 4 out of 5 dentist recommend a certain brand of toothpaste. Suppose There are 120 dentist in your are

a. What is the expected number of dentist who recommend the brand? What is the standard deviation?

1 answer:

Svet_ta [14]3 years ago

6 0

4/5 recommend, so about 4/5(120) = 96 doctors recommend the brand.

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