Mathematics, 28.11.2019 00:31 kiaraangely100400
In some cities tall people who want to meet and socialize with other tall people can join beanstalk clubs. to qualify, a man must be over 6'2" tall, and a woman over 5'10". according to the national health survey, heights of adults may have a normal model with mean heights of 69.1" for men and 64.0" for women. the respective standard deviations are 2.8" and 2.5".
a) you’re probably not surprised to learn that men are generally taller than women, but what does the greater standard deviation for men’s heights indicate?
b) are men or women more likely to qualify for beanstalk membership?
c) beanstalk members believe that height is an important factor when people select their spouses. to investigate, we select at random a married man and, independently, a married woman. define two random variables, and use them to express how many inches taller the man is than the woman.
d) what’s the mean of this difference?
e) what’s the standard deviation of this difference?
f ) what’s the probability that the man is taller than the woman (that the difference in heights is greater than 0)? g) suppose a survey of married couples reveals that 92% of the husbands were taller than their wives. based on your answer to part f, do you believe that people’s choice of spouses is independent of height? explain.
Answers: 1
Mathematics, 21.06.2019 18:00, amandaclark255
Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer
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Mathematics, 22.06.2019 00:30, benchang3621
Find the values of the variables and the lengths of the sides of this kite.
Answers: 3
Mathematics, 22.06.2019 01:00, jazzytazzyyy
Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]
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In some cities tall people who want to meet and socialize with other tall people can join beanstalk...
Mathematics, 14.12.2020 23:30
Mathematics, 14.12.2020 23:30