What is the definition of "forward vertical integration"? igcse business studies

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

Bramble corporation is a small wholesaler of gourmet food products. data regarding the store's operations follow:

Dera diamonds inc. is a premium jeweler. its clientele includes movie stars, politicians, businessmen, and popular socialites. it has a team of jewelry experts that designs jewelry for each of its client from scratch. everything is made to meet the specific requirements of the clients, and no two jewelry pieces produced by this company has ever been identical. this is an example of