Mathematics, 14.07.2019 04:30 Brock2002
Agirl can sweep the garage in 20 minutes, while her brother needs 30 minutes to do the same job. how many minutes will it take them to sweep the garage if they work together?
Answers: 1
Mathematics, 21.06.2019 16:00
What is the length of the unknown leg in the right triangle ?
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Mathematics, 21.06.2019 19:30
Identify the number as a rational or irrational.explain. 127
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Mathematics, 21.06.2019 21:30
In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?
Answers: 1
Agirl can sweep the garage in 20 minutes, while her brother needs 30 minutes to do the same job. how...
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