If the reported national success rate for a particular operation is 80%, what number of unsuccessful operations would you expect to find in a review of 100 records in your hospital if your rate is the same as the national average?
b suppose you found records for 25 unsuccessful operations among the 100 surveyed. is there enough evidence to conclude that the success rate is different from the national experience?
c what would be your conclusion if you found 250 unsuccessful operations in a review of 1000 records?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie