A confidence interval is calculated by: a sample mean( /-) z score times (1.645/1.96/2.58) b sample mean( /-) critical value z-score times the sampling standard deviation c sample mean ( /-) (1.645/1.96/2.58) d sample mean ( /-) (1.645/1.96/2.58) times the area under the curve e None of the above

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. another supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which would you choose and how much would you save with that choice? show calculator try it! if you buy 1000 ml bags, how many do you need to buy each month? type your answer in the space provided and click on the check answer button.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?