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Mathematics, 21.06.2019 14:10
Which linear equations have an infinite number of solutions? check all that apply. (x β 3/7) = 2/7(3/2x β 9/14)8(x + 2) = 5x β 1412.3x β 18 = 3(β6 + 4.1x)οΏΌ(6x + 10) = 7(οΏΌx β 2)4.2x β 3.5 = 2.1 (5x + 8)
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Mathematics, 21.06.2019 17:30
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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?
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