Suppose that a worker in Boatland can produce either 5 units of wheat or 25 units of fish per year, and a worker in Farmland can produce either 25 units of wheat or 5 units of fish per year. There are 30 workers in each country. No trade occurs between the two countries. Boatland produces and consumes 75 units of wheat and 375 units of fish per year while Farmland produces and consumes 375 units of wheat and 75 units of fish per year. If trade were to occur, Boatland would trade 90 units of fish to Farmland in exchange for 80 units of wheat. If Boatland now completely specializes in fish production, how many units of fish could it now consume along with the 80 units of imported wheat?a. 490 unitsb. 500 unitsc. 610 unitsd. 660 units

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis.b)reject the null hypothesis and conclude the mean is higher than $6,000 per day.c)reject the null hypothesis and conclude the mean is lower than $6,000 per day.d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day.expert answer