Mathematics, 03.12.2019 17:31 kaitietrueman8823
Aclass of 10 students hang up their coats when they arrive at school. just before recess, the teacher hands one coat selected at random to each child. what is the expected number of children who get his or her own coat?
Answers: 3
Mathematics, 21.06.2019 19:50
The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:
Answers: 3
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
Mathematics, 21.06.2019 22:00
Two numbers have a sum of -19. one number is x. what expression represents the other number?
Answers: 2
Mathematics, 22.06.2019 00:30
On ryan's last social studies test there were two types of questions true/false worth 3 points each and multiple choice questions worth 4 points each
Answers: 3
Aclass of 10 students hang up their coats when they arrive at school. just before recess, the teache...
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