Solve manually. *Do not use Excel* An experiment was conducted to compare the mean number of tapeworms in the stomach of cows that had been treated against the mean in those that were not treated. After 6 months, the following worm count were recorded. Are the variances different? Is there any difference in the mean no. of worms between treated and untreated cow (0:0.05) ? - Treated:5,13,18,6,4,2,15 - Untreated: 40, 50, 26, 63, 21, 37