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)

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling