Please help me. Thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(3 pts.) 3. A researcher wants to know the affect of eating certain types of food on the ability toconcentrate. Therefore. she randomly assigns 120 college students to one of three groups:vegetarian, high protein, or high carbohydrate. Before the diet change, she gives eachstudent a concentration test. After 3 months of the speci?c diet, she re-administers the testand records the change in test scores. (1 pt.) a) Draw the correct experimental design of this study. (1 pt.) b) Describe a possible methodology that could be used to decide which students will beassigned to which diet. (1 pt.) o) Is this study well-designed? If not, how would you change the design method. Pleaseexplain your answer. (1 pt.) 4. An instructor wants to know whether freshmen and sophomores respond differently tothe different teaching methodologies, traditional lectures or active leaming. After the study isover, she conducts a survey to determine the response. Draw the correct design for thisexperiment. Hint: In the design, it is better to start off with the teaching methodology.Remember to clearly indicate what is randomized. (1 pt.) 5. Researchers wants to determine which diet is better in controlling blood sugar indiabetes; the normal low carbohydrate diet or a keto diet (no carbohydrates). Consider thefollowing observational study and experiment: Observational study One researcher ?nds 100 Type II diabetic women who have been using the normal lowcarbohydrate diet for at least one year and no other methods of controlling diabetes. inaddition. he ?nds another 100 Type II diabetic women who have been using the keto diet forat least one year and no other methods of controlling diabetes. The researcher records theaverage fasting blood sugar value (seven readings). Experiment Another researcher ?nds 200 Type II diabetic women who are not taking any drugs (includinginsulin) for controlling diabetes. She randomly assigns 100I of the women to the normal lowcarbohydrate diet and the other 100 women to the keto diet. The researcher records theaverage fasting blood sugar value (seven readings) before the diet change and again oneyear later. Which of the two, the given observational study or the given experiment, gives betterinformation about the relationship between these diets and fasting blood sugar? Pleaseexplain your answer.
(3 pts. A researcher wants to know the affect of eating certain types of food on the ability to concentrate. Therefore. she randomly assigns 120…
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