Sam earned $233.00 last week mowing lawns. He also spent $47.00 on fuel and repairs to his lawnmower. Estimate the amount of money he profited last week by rounding each number to the nearest ten. (Hint: Profit= money earned - money spent on expenses) $170.00 /$180.00/ $200.00 /$190.00 Hellpp please - for 15 points

Estimate the distance between orlando and jacksonville

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

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