The scores on a standardized test are normally distributed with a mean of 95 and standard deviation of 15. What test score is 0.2 standard deviations below the mean?

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

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.