Suppose that many large samples are taken from a population and that the
sample proportions are normally distributed, with a mean of 0.22 and a
standard error of 0.029. What is the 68% confidence interval?
O
O
O
O
A. (0.162 to 0.278)
B. (0.104 to 0.336)
C. (0.133 to 0.307)
D. (0.191 to 0.249)

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 difference between regular convex and concave polygons

(60 points) explain this in detail