The average price of a gallon of gas in 2015 dropped $0.94 (28 percent) from $3.34 in 2014 (to $2.40 in 2015). Required: 1. Conduct a horizontal analysis by calculating the year-over-year changes in each line item, expressed in dollars and in percentages for the income statement of Insignia Corporation for the year ended December 31, 2015 (amounts in billions). 2-a. Conduct a vertical analysis by expressing each line as a percentage of total revenues. 2-b. Excluding income tax and other operating costs, did Insignia earn more profit per dollar of revenue in 2015 compared to 2014?

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