Exam 58: Probability

The figure shows the results of a recent survey in which 1011 adults were asked to grade U.S.public schools.An adult is selected at random.What is the probability that the adult will give the U.S.public schools an A? ( $a = 3 \%$ , $b = 11 \%$ , $c = 19 \%$ )​ ​

Determine the sample space for the experiment. Three prize winners are selected from six people: A,B,C,D,E,and F.

There were approximately 42 million unemployed workers in the United States.The circle graph shows the age profile of these unemployed workers.What is the probability that a person selected at random from the population of unemployed workers is 45 or older? ( $a = 42 \%$ and $b = 39 \%$ )​ ​

118 college students were interviewed to determine their political party affiliations and whether they favored a balanced-budget amendment to the Constitution.The results of the study are listed in the table,where D represents Democrat and R represents Republican. Favor Not favor Unsure Total 22 27 6 55 50 6 7 63 Total 72 33 13 118 A person is selected at random from the sample.Find the probability that the described person is selected.A person who doesn't favor the amendment.Round your anser to one decimal place.

The figure shows the results of a recent survey in which 1040 adults were asked to grade U.S.public schools.Estimate the number of adults who gave U.S.public schools a B.​ ​

There were approximately 8.92 million unemployed workers in the United States.The circle graph shows the age profile of these unemployed workers.What is the probability that a person selected at random from the population of unemployed workers is in the 45-64 age group.​ ​

Find the probability for the experiment of drawing two marbles (without replacement)from a bag containing 2 green,6 yellow and 3 red marbles such that both marbles are yellow.