Question 4 (21 points): Multimark has just introduced a new product to the market and is interested in the effect of packaging color on sales. Three colors are currently being studied: red, gold and silver. One store was randomly selected with an identical layout for all three types of packaging. The number of units sold of this new product with each type of packaging was. recorded for a period of 11 days. The data is presented in the table on the right. Packaging Color Day 2 3 4 5 6 7 8 9 10 Red 33 40 28 26 28 30 35 28 36 29 35 Gold 41 37 25 28 46 31 37 36 40 28 37 Silver 38 21 24 33 36 22 23 29 20 38 29 a) What is the dependent variable? b) Identify the factor whose effect on the dependent variable is to be tested and how many ways does it have? c) Describe in words the null hypothesis to be tested in this experiment and specify it in statistical form. d) We also give =1087 j=1 i1 =34543