Z0 0m i d:- 257 473 5835 p c:- 1234 mathematics classes going on here​

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.

What is the perimeter of square abcd? units units 28 units 37 units

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box