The average age of person at a party if 17 with a mean absolute deviation of 2.
Based on the statement which of the following statements must be true?

a) At the party, no one is 17.
b) The average distance each person’s age is away from the mean is 2.
c) Everyone at the party must be between 15 and 19 years old.
d) Everyone at the party is 17 years old.

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

Jose bought 20 shares of netflix at the close price of $117.98. in a few years, jose sells all of his shares at $128.34. how much money did jose make? a.) $192.50 b.) $207.20 c.) $212.50 d.) $224.60

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.