subject
Mathematics, 03.10.2020 01:01 kony345p

A few years ago, a survey commissioned by the world almanac and maturity news service reported that 51% of the respondents did not believe the social security system will be secure in 20 years, of the respondents who where age 45 or older,70% beloved the system will be secure in 20 years. Of the surveyed people,57% were under age 45. One respondent is selected randomly, use the tree diagram method to calculate (a) what is the probability that the person selected is age 45 or older? (b)what is the probability that the person is younger than age 45 and believes that the social security system will be secure in 20 years? (C) if the person selected believes that the social security system will be secure in 20 years, what is the probability that the person is 45 years old or older? (D) what is the probability that the person is younger than age 45 or believes the social security system will not be secure in 20 years?

ansver
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 19:30, bigboss2984
Hey am have account in but wished to create an account here you guys will me with my make new friends of uk !
Answers: 1
image
Mathematics, 21.06.2019 19:30, valerieaj113
Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500
Answers: 2
image
Mathematics, 21.06.2019 22:00, shelovejaylocs
The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm
Answers: 1
image
Mathematics, 21.06.2019 22:00, johnlumpkin5183
Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.
Answers: 1
You know the right answer?
A few years ago, a survey commissioned by the world almanac and maturity news service reported that...

Questions in other subjects: