Practical Business Statistics (8th Edition, 2023) –
Solutions Manual – Siegel
There are 21 families living in the Willbrook Farms Development. Of these families, 10 prepared
their own federal income taxes for last year, 5 had their taxes prepared by a local professional,
and the remaining 6 were done by H&R Block.
What is the probability of selecting a family that prepared their own taxes? (Round your answer
to 4 decimal places.) - answers-.4762
10/20 = .4762
There are 21 families living in the Willbrook Farms Development. Of these families, 10 prepared
their own federal income taxes for last year, 5 had their taxes prepared by a local professional,
and the remaining 6 were done by H&R Block.
What is the probability of selecting two families, both of which prepared their own taxes?
(Round your answer to 4 decimal places.) - answers-.2143
(10/21)(9/20) = .2143
There are 21 families living in the Willbrook Farms Development. Of these families, 10 prepared
their own federal income taxes for last year, 5 had their taxes prepared by a local professional,
and the remaining 6 were done by H&R Block.
What is the probability of selecting three families, all of which prepared their own taxes?
(Round your answer to 4 decimal places.) - answers-.0902
1
Solutions Manual – Siegel
There are 21 families living in the Willbrook Farms Development. Of these families, 10 prepared
their own federal income taxes for last year, 5 had their taxes prepared by a local professional,
and the remaining 6 were done by H&R Block.
What is the probability of selecting a family that prepared their own taxes? (Round your answer
to 4 decimal places.) - answers-.4762
10/20 = .4762
There are 21 families living in the Willbrook Farms Development. Of these families, 10 prepared
their own federal income taxes for last year, 5 had their taxes prepared by a local professional,
and the remaining 6 were done by H&R Block.
What is the probability of selecting two families, both of which prepared their own taxes?
(Round your answer to 4 decimal places.) - answers-.2143
(10/21)(9/20) = .2143
There are 21 families living in the Willbrook Farms Development. Of these families, 10 prepared
their own federal income taxes for last year, 5 had their taxes prepared by a local professional,
and the remaining 6 were done by H&R Block.
What is the probability of selecting three families, all of which prepared their own taxes?
(Round your answer to 4 decimal places.) - answers-.0902
1
