Two pizza delivery drivers compared the mean numbers of deliveries they completed in one day.
Mean number of deliveries Mean Absolute Deviation (MAD)
Driver A 12
3
Driver B 15
3
Which statement about the data is true?
A. The MAD for driver A is less than the MAD for driver B.
B. The mean number of deliveries for driver A is less than the mean
for driver B by 1 MAD.
C. The mean number of deliveries for driver A is less than the mean
for driver B by 3 MADs.
D. On average, driver A delivers more pizzas in one day than driver B.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

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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