4.91 homework

4.91 Internet Access. From the document "Computer and Internet Use in the United States: Population Characteristics" (Current Popu- lation Survey) by T. File, we obtained the following percentage distri- bution of household income for U.S. households with Internet access. Household income Percentage Event Less than $25,000 17.1 A $25,000-$49,999 24.0 B $50,000-$99,999 35.0 C $100,000-$149,999 14.1 $150,000 or more 9.8 E Suppose that a U.S. household with Internet access is selected at random. Let A denote the event that the household has an income under $25,000, B denote the event that the household has an income between $25,000 and $49,999, and so on (see the third column of the table). Apply the special addition rule to find the probability that the household obtained has an income a. under $50,000. b. $25,000 or above. c. between $25,000 and $149,999, inclusive. d. Interpret each of your answers in parts (a) (c) in terms of percentages