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A semi-elliptical arch is 40 feet wide and 10 feet high. Find its height 5 feet from the middle. Round to the nearest hundredth.
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What is the probability that a PIN assigned at random has at least one 0?
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The personal identification numbers (PINs) for automatic teller machines usually consist of four digits. You notice that most of your PINs have at least one 0, and you wonder if the issuers use lots of 0s to make the numbers easy to remember. Suppose that PINs are assigned at random, so that all four-digit numbers are equally likely.
(a) How many possible PINs are there?
(b) What is the probability that a PIN assigned at random has at least one 0?
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6 years
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Probability
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anonymous
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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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In a class of 19 students, 10 study Spanish, 7 study French, and 2 study both French and Spanish. One student is picked at random. Find each probability.
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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?
asked
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