This exercise assumes familiarity with counting arguments and
probability.
Kent's Tents has four red tents and three...
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Basic Math
This exercise assumes familiarity with counting arguments andprobability.
Kent's Tents has four red tents and three green tents in stock.Karin selects four of them at random. Let X be the numberof red tents she selects. Give the probability distribution. (Enteryour probabilities as fractions.)
x
1
2
3
4
P(X = x)
Find
P(X ? 2).
(Enter your probability as a fraction.)
P(X ? 2) =
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Number of ways in which r items can be selected from n availableitems nCr nr x nrTotal number of tents 4 3 7Number of ways in which 4 tents can be selected
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