Probability of an Event 2-1. An injection-molded part is equally likely to be obtained from any one of the eight cavities on a mold. a) What is the sample space? b) What is the probability that a part is from cavity 1 or 2? c) What is the probability that a part is from nei- ther cavity 3 nor 4? 2-2. A box contains 500 envelopes, of which 75 con- tain $100 in cash, 150 contain $25, and 275 contain $10. An envelope may be purchased for $25. What is the sample space for the different amounts of money? Assign probabilities to the sample points and then find the probability that the first envelope purchased contains less than $100. 2-3. A pair of fair dice is tossed. Find the probability of getting a) a total of 8; b) at most a total of 5.
Probability of an Event 2-1. An injection-molded part is equally likely to be obtained from any one of the eight cavities on a mold. a) What is the sample space? b) What is the probability that a part is from cavity 1 or 2? c) What is the probability that a part is from nei- ther cavity 3 nor 4? 2-2. A box contains 500 envelopes, of which 75 con- tain $100 in cash, 150 contain $25, and 275 contain $10. An envelope may be purchased for $25. What is the sample space for the different amounts of money? Assign probabilities to the sample points and then find the probability that the first envelope purchased contains less than $100. 2-3. A pair of fair dice is tossed. Find the probability of getting a) a total of 8; b) at most a total of 5.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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