An airline charges the following baggage fees: $25 for the first bag and $35 for the second. suppose 54% of passengers have no checked luggage, 34% have one piece of checked luggage and 12% have two pieces. we suppose a negligible portion of people check more than two bags.
a) build a probability model, compute the average revenue per passenger, and compute the corresponding standard deviation.
b) about how much revenue should the airline expect for a flight of 120 passengers? with what standard deviation? note any assumptions you make and whether you think they are justified.

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Abottled water distributor wants to estimate the amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company. the water bottling company’s specifications state that the standard deviation of the amount of water is equal to 0.02 gallon. a random sample of 50 bottles is selected, and the sample mean amount of water per 1-gallon bottle is 0.995 gallon a. construct a 99% confidence interval estimate for the popula-tion mean amount of water included in a 1-gallon bottle. b. on the basis of these results, do you think that the distributor has a right to complain to the water bottling company? why? c. must you assume that the population amount of water per bottle is normally distributed here? explain. d. construct a 95% confidence interval estimate. how does this change your answer to (b)?