What is the standard deviation of the data set? Round to the nearest tenth if needed. 2, 4, 7, 8, 9 2.6

7

6

2.9

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

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?