A survey showed the number of viewers and number of households of four television networks. Find the average number of viewers, using the weighted mean.
Answer to relevant QuestionsAn investor calculated these percentages of each of three stock investments with payoffs as shown. Find the average payoff. Use the weighted mean. If one card is drawn from a deck, find the probability of getting these results. a. A queen b. A club c. A queen of clubs d. A 3 or an 8 e. A 6 or a spade f. A 6 and a spade g. A black king h. A red card and a 7 i. A diamond ...Elementary and secondary schools were classified by the number of computers they had. Choose one of these schools at random. Choose one school at random. Find the probability that it has a. 50 or fewer computers b. More ...Four balls numbered 1 through 4 are placed in a box. A ball is selected at random, and its number is noted; then it is replaced. A second ball is selected at random, and its number is noted. Draw a tree diagram and determine ...At a used-book sale, 100 books are adult books and 160 are children’s books. Of the adult books, 70 are nonfiction while 60 of the children’s books are nonfiction. If a book is selected at random, find the probability ...
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