3. Debbie, an architect, is designing the interior doors to a new sports bar. She wants the doors to be high enough so that 90% of the men using the doors will have at least one foot
clearance. Assuming the heights to be normally distributed with a mean of 69 inches and a
standard deviation of 4 inches, how high must Debbie design the doors to satisfy her
requirements?

2-digit numbers less than 91 which are 1 less than a multiple of 10

Translate the following situation into an inequality statement . lily has $25 to spend on a charm bracelet for her sisters birthday gift the cost of the bracelet is $12 plus $1.50 per charm

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem