finite Math 200 Question Help
7. [-/3 Points] DETAILS TANFIN12 7.2.036. MY NOTES PRACTICE ANOTHER Let S = ($1, $2, $3, $4, $5, $6) be the sample space associated with the experiment having the following probability distribution. (Enter your answers as fractions. Outcome $1 $2 $4 $5 $6 4 Probability 12 12 12 12 12 12 (a) Find the probability of A = ($1, $3)- (b) Find the probability of B = ($2, $4, $5, $6). (c) Find the probability of C = S. Need Help? Read It 8. [-/3 Points] DETAILS TANFIN 12 7.2.040. MY NOTES PRACTICE ANOTHER An experiment consists of recording the sex composition, in order of their births, of a four-child family in which the children were born at different times. Assuming that a boy is equally likely as a girl to be born into a family, what is the probability that a four-child family chosen at random will have the following? (a) Three girls and a boy in the family (b) A youngest child in the family who is a girl (c) An oldest child and a youngest child in the family who are both boys Need Help? Read It Watch It 9. [-/2 Points] DETAILS TANFIN12 7.2.043. MY NOTES PRACTICE ANOTHER An opinion poll was conducted among a group of registered voters in a certain state concerning a proposition aimed at limiting state and local taxes. Results of the poll indicated that 40% of the voters favored the proposition, 27% were against it, and the remaining group were undecided. If the results of the poll are assumed to be representative of the opinions of the state's electorate, what is the probability that a registered voter selected at random from the electorate holds the following opinions? (a) favors the proposition (b) is undecided about the proposition Need Help? Read It 10. [-/2 Points] DETAILS TANFIN12 7.2.050. MY NOTES PRACTICE ANOTHER In a survey of 1402 workers 18 years old and older regarding their opinion on retirement benefits, the following data were obtained: 828 said that it was better to have excellent retirement benefits with a lower-than-expected salary, 477 said that it was better to have a higher-than-expected salary with poor retirement benefits, 43 said "neither," and 54 said "not sure." If a worker in the survey is selected at random, what is the probability that he or she answered that it was better to have each of the following? (Round your answers to three decimal places.) (@) excellent retirement benefits with a lower-than-expected salary (b) a higher-than-expected salary with poor retirement benefits Need Help? Read It 11. [-/2 Points] DETAILS TANFIN12 7.2.052. MY NOTES PRACTICE ANOTHER In a survey, 800 homeowners were asked about their expectations regarding the value of their home in the next few years; the results of the survey are summarized as follows. Expectations Homeowners Decrease 47 Stay the same 154 Increase less than 5% 235 Increase 5-10% 250 Increase more than 10% 114 If a homeowner in the survey is chosen at random, what is the probability that he or she expected his or her home to do the following? (Round your answers to three decimal places.) (@) stay the same or decrease in value in the next few years (b) increase 5% or more in value in the next few years Need Help? Read It
