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Mathematics, 21.06.2019 14:50
Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift
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Mathematics, 21.06.2019 19:30
Factor the polynomial 4x4 β 20x2 β 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 β 5) (4x2 β 3)(x2 β 5) (4x2 β 5)(x2 + 3) (4x2 + 5)(x2 β 3)
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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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