Question 205564: In many families, both parents work. As a result, there is increasing need for day care. Data was collected; and in one year in Canada appoximately 32%of children ages 0 to 11 years were in day care for at least 20 hours a week.
A.) What is the probability in a random poll of 60 children from the ages 0 to 11 that more then 15 children are in day care at least 20h per week.?
B.) What is the probability, in a random poll of 60 children that fewer then 20 are in day care at least 20 hours per week?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! In many families, both parents work. As a result, there is increasing need for day care. Data was collected; and in one year in Canada appoximately 32%of children ages 0 to 11 years were in day care for at least 20 hours a week.
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A.) What is the probability in a random poll of 60 children from the ages 0 to 11 that more then 15 children are in day care at least 20h per week.?
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It's binomial because children either are or are not in day care for >= 20 hrs.
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n= 60 ; p = 0.32 ; 15 < x <= 60
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P(15 < x <= 60) = 1 - binomcdf(60,0.32,15) = 0.8474
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B.) What is the probability, in a random poll of 60 children that fewer then 20 are in day care at least 20 hours per week?
binomcdf(60,0.32,19) = 0.5396
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Cheers,
Stan H.
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