[ 331 ] Life Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • A student tests the hypothesis that lack of vitamin C will reduce growth in mammals. He takes two mice and puts them in separate cages. One mouse has normal food and the other mouse has food that has no vitamin C. Both mice have the same amounts of water available, the same room temperature, and the same day/night cycles. The student weighs each mouse weekly for two months. The data are shown in the table. Weeks Normal Diet (in grams) Vitamin C-Deficient Diet (in grams) 1 20.0 20.1 2 20.2 20.0 3 20.5 19.9 4 20.3 20.3 5 20.4 20.3 6 20.1 20.4 7 20.0 20.2 8 20.1 20.2 In a lab report, the student concludes that the hypothesis was incorrect. Which statement regarding the student’s experiment is true? A. Measuring the weight of mice was not appropriate to test the hypothesis. B. The weight of the mouse on the normal diet was not significantly different from that of the mouse on the vitamin C-deficient diet. C. The experiment had no control. D. The sample size was insufficient to test the hypothesis.