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?
Answers: 1
Mathematics, 21.06.2019 21:30, BARRION1981
Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?
Answers: 1
Mathematics, 21.06.2019 22:00, sarahnd6907
Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota
Answers: 2
Mathematics, 22.06.2019 00:10, jocelynfray16
Change negative exponents to positive. then solve. round to four decimal places
Answers: 3
A few years ago, a survey commissioned by the world almanac and maturity news service reported that...
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