Given P(A)=0.3P(A)=0.3, P(B)=0.63P(B)=0.63 and P(B|A)=0.79P(B∣A)=0.79, find the value of P(A\text{ and }B)P(A and B), rounding to the nearest thousandth, if necessary.

Use the multiplier method to incrases £258 by 43%

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

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much