Chapter 15: Q22P (page 744)
Supposepeople want to schedule a regular meeting one evening a week. What is the probability that there is an evening when everyone is free if each person is already busy one evening a week?
The probability that everyone is available at a given day is .
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A ball is thrown straight up and falls straight back down. Find the probability density function so that is the probability of finding it between height and . Hint: Look at Example .
Two decks of cards are “matched,” that is, the order of the cards in the decks is compared by turning the cards over one by one from the two decks simultaneously; a “match” means that the two cards are identical. Show that the probability of at least one match is nearly.
Suppose a coin is tossed three times. Let x be a random variable whose value is 1 if the number of heads is divisible by 3, and 0 otherwise. Set up the sample space for x and the associated probabilities. Find x and σ.
Find the number of ways of puttingparticles in boxes according to the three kinds of statistics.
Two dice are thrown; x = sum of the numbers on the dice
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