3. Analysis of variance (ANOVA) The following data shows the number of claims processed daily by a group of four employees of an insurance company observed over a certain number of days. Test the hypothesis that there is a significant difference in average claims per day per employee. Use a significance level of .05

Employee 1	15	17	14	12
Employee 2	12	10	13	17
Employee 3	11	14	13	15	12
Employee 4	13	12	12	14	10	9