The distribution of the number of school-age children per family in the Whitehal
ID: 3244318 • Letter: T
Question
The distribution of the number of school-age children per family in the Whitehall Estates area of Boise, Idaho, is:
Determine the mean and standard deviation of the number of school-age children per family in Whitehall Estates. (Round your answers to 2 decimal places.)
A new school is planned in Whitehall Estates. An estimate of the number of school-age children is needed. There are 500 family units. How many children would you estimate?
Convert the preceding distribution to one for families with children. (Round your answers to 5 decimal places.)
The distribution of the number of school-age children per family in the Whitehall Estates area of Boise, Idaho, is:
Explanation / Answer
(a) mean = 0+1*0.30+2*0.4+3*.03+4*.02= 1.27
sd = sqrt (2.49-(1.27)^2) = 0. 94
(b) On average there are 1.27 children per family for 500 families there are about 635 children estimated.
(c-1)
(c-2) mean = 1.69
No. of children P(X) 1 30/75= 0.4000 2 40/75= 0.5333 3 0.0400 4 0.0267Related Questions
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