Approximately 86.5% of Americans commute to work by car, truck or van. Out of that group, 84.6% drive alone and 15.4% drive in a carpool. Approximately 3.9% walk to work and approximately 5.3% take public transportation. (
Source: Bureau of the Census, U.S. Dept. of Commerce. Disregard rounding approximations. )
Construct a table or a tree diagram of the situation. Include a branch for all other modes of transportation to work.
Assuming that the walkers walk alone, what percent of all commuters travel alone to work?
Suppose that 1000 workers are randomly selected. How many would you expect to travel alone to work?
Suppose that 1000 workers are randomly selected. How many would you expect to drive in a carpool?
The next two questions refer to the following probability tree diagram which shows tossing an unfair coin
FOLLOWED BY drawing one bead from a cup containing 3 red (
), 4 yellow (
) and 5 blue (
) beads. For the coin,
and
where
and
.
The next three questions refer to the following table of data obtained from
www.baseball-almanac.com showing hit information for 4 well known baseball players. Suppose that one hit from the table is randomly selected.