Mathematics, 10.11.2020 17:00 iilovejohnccena1022
At Northbend High School, 28% of students are Sophomores, 25% are Juniors,
and 29% are Seniors. 17% of Sophomores, 26% of Juniors, and 60% of Seniors
drive to school. No freshmen drive to school.
Suppose we select one student from this school at random and record which class
they are in as well as whether they drive to school or not.
(a) Draw a tree diagram to model this random process.
(b) Find the probability that the student drives to school.
(c) What is the probability that he or she is a Senior given that the student drives
to school?
(d) Are the events "drive to school" and "junior" mutually exclusive? Explain!
(e) Are the events "drive to school" and "senior" independent? Justify your
answer.
Answers: 3
Mathematics, 20.06.2019 18:04, srichard9955
Atriangle has sides with lengths of 10 yards, 13 yards, and 18 yards. is it a right triangle?
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Mathematics, 21.06.2019 18:00, woebrooke11
Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.
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Mathematics, 21.06.2019 18:40, calebhoover03
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
At Northbend High School, 28% of students are Sophomores, 25% are Juniors,
and 29% are Seniors. 17%...
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