Alarge group of fans are upset about the high price of tickets to many events. as a result of their lobbying efforts, a new law caps the maximum ticket price to any sporting event at $50. assume there are a fixed amount of seats in the stadium, all seats are available to be sold, and the price of tickets before the ceiling was at an equilibrium point above $50. the price ceiling will create a of tickets, which will be greater if demand is more and people will attend the events. group of answer choices

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