When evaluating a control chart, which of the following is not a warning signal that a random variable x is out of control?
a. there is a point above the upper control limit (ucl).
b. all the points are on one side of the center line
c. there is a point below the lower control limit (lcl)

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. find the lateral area for the prism. l.a. = 0123456789