4. An environmentalist is studying sh populations in Alberta lakes. The environmentalist is concerned that certain fish populations may be experiencing abnormal growth rates due to pollutants present in lake water. The environmentalist obtains random samples of Northern Pike from each of 3 different lakes, and the weights (in grams) are given in the following table Online STAT 151 Total: 88 marks 618 905 893 601 :71 = 970 :72 = 862.17 :73 = 754.25 51 = 198.66 s2 = 124.03 53 = 167.36 (a) Complete the AN OVA table below. (4 marks) Source (if 55' 55 F-statistic P-value M5 = E 103954 0-184 318792 26566 _ 422746 _ ([1) Test for a difference in mean weight of northern pike among the three lakes. Use the 5% signicance level (6 marks)