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A teacher calculates that if a student regularly completes their homework, the probability that they pass the exam is 0.8, and that if the student doesn't do their homework regularly
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A teacher calculates that if a student regularly completes their homework, the probability that they pass the exam is 0.8, and that if the student doesn't do their homework regularly, the probability of passing is 0.4, given only 75% of pupils regularly complete their homework, calculate the probability that a randomly selected student:
a) Does not do the homework and passes the exam
b) Passes the exam
asked
7 years
ago
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Probability
by
anonymous
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Flat feet is a recessive trait. Butch and Blanche are about to have their first child. They both have "normal" feet but Blanche's father has flat feet and Butch has a child from a previous marriage who has flat feet. What is the probability that they will have a girl with normal feet?
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26. Barney and Betty are about to have their first child. They both have "normal" feet but Barney's father has flat feet and Betty has a child from a previous marriage who has flat feet. What is the probability that they will have a boy with flat feet?
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