In a retail store three different product shelf displays were used to see if there was any change in the volume of sales. The sales in $ for each product display is shown below. Assume a 0.05 level of significance. 1 Display 2 3 58 58 48 64 69 69 57 57 55 71 59 66 64 47 67 10 49 49 68 a) State the null hypothesis and the alternative hypothesis for the sales of three product displays b) Complete an ANOVA table c) Draw the F curve and show the critical value and the F stat d) State your decision regarding the null hypothesis