Which of the following statements is true and would show that the 4 points are the vertices if a parallelogram? A. DA=AB=BC=CD=square root 17

B. AB=CD=square root13;DA=BC=square root 17

C. DB= square root 18;AC=square root 38

D. M__=M=__=3/2
AB. AD

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?

Which strategy is used by public health to reduce the incidence of food poisoning?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.