A normal population has the mean of 20 and the variance of 100. A random sample of size is selected. (a) Find the standard deviation of the sample mean. (b) How large must the sample be if you want to halve the standard deviation

What is the average rate of change for this function for the interval from x=2 to x=4 ?

5x−4≥12 or 12x+5≤−4 can you with this problem

(03.03 mc) choose the graph below that correctly represents the equation 2x + 4y = 24. (5 points) select one: a. line through the points 0 comma 6 and 12 comma 0 b. line through the points 0 comma negative 6 and 12 comma 0 c. line through the points 0 comma negative 12 and 6 comma 0 d. line through the points 0 comma 12 and 6 comma 0