20 points! Please help A population has a standard deviation of 7.89. What is the approximate standard error of the mean for a sample size of 300?

A.
0.026
B.
0.46
C.
17.32
D.
2.20

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.