For a. And c. Fill in the blanksFor b. Select the right assumptions

= Guides Quick links A company performed a market study to examine the sales of a product under four different package designs. It is believed the location of the supermarket that sells the product will also affect the sales of the product. Therefore, the supermarkets were categorized into three according to where they were situated: in a large shopping mall, in a small shopping mall and not in a shopping mall. The sales (in Rands) of the product from each type of supermarket was recorded after a week. Using the data collected, the error sum of squares was calculated at 225.18. a) Type in the full name of the type of experimental design: b) Select the assumptions concerning the statistical technique used to analyse this data: DOThe samples come from a population that is approximately normally distributed There are no other external factors that can affect the sales of the product for the different packaging designs, besides the location of the supermarket The samples comes from populations that have the same variance There are no other differences of the product that can affect the sales, besides the design of the packaging The samples were collected independently of each other c) The following table gives the total sales of the product (for all the packaging designs) sold at each type of supermarket: Large Shopping Mall Small Shopping Mall Not in a Shopping Mall 1150 1260 1435 Determine the lower and upper limits of a 95% confidence interval for the difference in the average sales of the product sold at supermarkets located in a large shopping mall and a small shopping mall. Round each calculation to 2 decimal places. Lower = upper = Thus, there a significant difference between the average sales of the product sold at supermarkets located in a large shopping mall and a small shopping mall