Aresearcher reports survey results by stating that the standard error of the mean is 20. the population standard deviation is 500.
a. how large was the sample used in this survey?
b. what is the probability that the point estimate was within ±25 of the population mean?

multiply 20 by 500. it should help you with the problem.

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

maybe showing the graph would

step-by-step explanation:

-387129 iq