Assume that females have pulse rates that are normally distributed with a mean of 73.0 beats per minute and a standard deviation Of 12.5 beats per minute, If I adult female is randomly Selected, find the probability that her pulse is less than 80 beats per minute.​

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

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

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f