SOLUTION: About 73% of dog owners buy holiday presents for their dogs. Suppose n=4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog hol

Algebra ->  Probability-and-statistics -> SOLUTION: About 73% of dog owners buy holiday presents for their dogs. Suppose n=4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog hol      Log On


   



Question 856364: About 73% of dog owners buy holiday presents for their dogs. Suppose n=4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog holiday presents.
Answer by stanbon(75887) About Me  (Show Source):
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About 73% of dog owners buy holiday presents for their dogs. Suppose n=4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog holiday presents.
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E(x) = np = 4*0.73 = 2.86
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Cheers/
Stan H.
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