The mean cost of a meal for two in a mid-range restaurant in tokyo is $40 (numbeo website, december 14, 2014). how do prices for comparable meals in hong kong compare? the datafile hongkongmeals contains the costs for a sample of 42 recent meals for two in hong kong mid-range restaurants. click on the datafile logo to reference the data. a. with 95% confidence, what is the margin of error (to 2 decimals)? b. what is the 95% confidence interval estimate of the population mean (to 2 decimals)? ( , ) c. how do prices for meals for two in mid-range restaurants in hong kong compare to prices for comparable meals in tokyo restaurants? the mean cost of comparable meals in hong kong is than in tokyo.

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500