The lengths of lumber a machine cuts are normally distributed with a mean of 105 inches and a standard deviation of 0.7 inch (a) What is the probability that a randomly selected board cut by the machine has a length greater than 105.21 inches?
b) A sample of 38 boards is randomly selected. What is the probability that their mean length is greater than 105.21 Inches?
(A) Probability is-
(B) Probability is-

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

Describe a situation that you could represent with the inequality x< 17

In the diagram of circle o, what is the measure of zabc?