Plz hurry it's urgent! the data represent the number of phone calls received over an 8-day period. day 1 2 3 4 5 6 7 8 calls received 4 5 9 1 0 5 11 11 what is the mean number of phone calls received? a. 11 b. 5.75 c. 6.6 d. 5

Which of the following best describes the delian problem?

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?

The measures of two supplementary angles are (2x + 10)° and (8x + 10)°. what is the measure of the larger angle? a. 16° b. 44° c. 14° d. 138°