Answered

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According to a commercial, 4 out of 5 dentist recommend a certain brand of toothpaste. Suppose There are 120 dentist in your area. What is the expected number of dentist who recommend the brand? What is the standard deviation? Needing assistance with calculating the standard deviation please.

Sagot :

fwater133
4/5 recommend, so about 4/5(120) = 96 doctors recommend the brand.
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