1. An experiment studies the effects of an experimental fertility drug on the number of offspring in each litter of pups produced by a mouse. 10 female mice are given the drug (Group A) and then artificially inseminated according to a standard protocol. The number of pups in their litters is compared to the litters of a second group of 10 mice that did not take the drug (Group B, the control). Number of Pups in Each Litter Group A 56 48 52 7 12 12 8 (drug) Group B (control) 446 6 5 6 4 7 5 3 a) b) c) What is the sample size for each group? Summarize and graph the data. What type of graph (and statistics) would work best for this data set? Based on the data, what would you conclude about the efficacy of the drug? 9 Fall 2017/tw 2. A type of feed claims to boost the growth rate of cows. The feed is tested on two twin newborn cows. Bessie receives the experimental feed, and Bertha receives regular corn feed. Their weights are recorded below Month Apri May June July Aug Bessie 150 lbs 210 lbs 260 bs 320 lbs 400 lbs Bertha 150 lbs 250 lbs 290 lbs 340 lbs 400 lbs a) Graph the data in your notebook; use a dotted line for Bessie and a straight line for Bertha. b) Both cows ended at the same weight, but did the experimental feed change the way they gained weight at all? c) Describe your conclusions about the experimental feed and explain why it is important that the experiment used twin cows.