Example 0.3. A normal population has mean 100 and variance 40. How large must a random sample be if we want standard error of the
sample mean to be 1.5 or less?18 or more
I

Which statement about the graph of y = 8(0.25)^2

What are the solution(s) to the quadratic equation x2 – 25 = 0? o x = 5 and x = -5ox=25 and x = -25o x = 125 and x = -125o no real solution

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол