subject
Mathematics, 03.04.2020 21:35 Billie9166

The average age for a person getting married for the first time is 26 years (U. S. News and World Report, June 6, 1994). Assume the ages for first marriages have a normal distribution with a standard deviation of four years. a) What is the probability that a person getting married for the first time is younger than 23 years of age?b) What is the probability that a person getting married for the first time is in his or her twenties?c) 90% of people getting married for the first time get married before what age?

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 21.06.2019 20:30
What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?
Answers: 2
question
Mathematics, 21.06.2019 21:50
In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?
Answers: 1
question
Mathematics, 21.06.2019 23:50
How are algebraic expressions evaluated using substitution?
Answers: 1
question
Mathematics, 22.06.2019 00:30
The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?
Answers: 3
You know the right answer?
The average age for a person getting married for the first time is 26 years (U. S. News and World Re...
Questions
question
Mathematics, 02.10.2019 17:40
Questions on the website: 13722361