Find the critical value corresponding to a sample size of 19 and a confidence level of 99 percent.

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

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

X+y=-4 x-y=2 use elimination with adding and subtraction