Recent surveys indicate 60% of tourists to china visited the forbidden city, the temple of heaven, the great wall, and other historical sites in or near beijing. forty percent visited xi’an with its magnificent terra-cotta soldiers, horses, and chariots, which lay buried for over 2,000 years. thirty percent of the tourists went to both beijing and xi’an. what is the probability that a tourist visited at least one of these places? (

It takes evan 6 3/4 to mow 3 lawns. it takes 2 1/3 hours to mow me. gals lawn and 1 3/4 hot mow ms. lee’s lawn. how many hours does it take evan to mow the third lawn?

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)?

In which month was the peak, the largest deposit, made? january june july august