09.02 Study Types Questions 1-10 of 10 | Page 1 of 1 Question 1 (5 points) Describe the design of an experimental study that could determine whether you send text messages faster before or after exercise. BIU Question 2 (5 points) In an observational study, it was noticed that people that eat more chocolate tend to have better blood flow than the general population. Researchers wonder whether the improved blood flow might be caused by flavanols (a molecule found in many foods). Dark chocolate contains a high concentration fo flavanols, but milk chocolate contains a much lower concentration. How could the researchers design an experiment to determine the effects of flavanol on blood flow from the different types of chocolate? BIVEEQuestion 3 (5 points) What type of study would you conduct if youwanted to knwo how many hours a week on average students at your school spend on homework Explain your reasoning- BIU S Question 4 (5 points) A researcher discovers that the diameter of a person's pupil in thier eye is directly related to how beautiful they find the image they are looking at. The researcher wants to know whether reading an article about climate change influences people's perception of pictures of a city in terms of beauty. 100 people have volunteered to be a part of the study. The researcher's assistants propose 3 options to run the study. The volunteers are split into 2 groups by a random process. One group will read the article and the other will not. Everyone will then look at the city pictures and the diameter of their pupil will be measured while they look at the pictures. What type of study is described: survey, observational study, or experimental study?Question 5 (5 points) A researcher discovers that the diameter of a person's pupil in thier eye is directly related to how beautiful they find the image they are looking at. The researcher wants to know whether reading an article about climate change influences people's perception pictures of a city in terms of beauty. 100 people have volunteered to be a part of the study. The researcher's assistants propose 3 options to run the study. . The volunteers are split into 2 groups by a random process. One group will read the article and the other will not. Everyone will then look at the city pictures and the diameter of their pupil will be measured while they look at the pictures. The volunteers look at the pictures of thecity and rate how beautiful they find the pictures on a scale of 1 to 10. They then read the aricle and look at the pictuers again, rating them on the same scale. . The volunteers are shown into an art gallery with the pictures of teh city on the wall and the article in a program given to the people when they enter. The researcher will keep track of who reads the program and measure the pupil size of people as they view the pictures. Which option should the researcher use? Explain your reasoning.Question 6 (5 points) In an experimental study, it was noticed that people who eat more leafy, green vegetables tend to get better sleep than the general population. Researchers wonder whether the improved sleep might be caused by the minerals potassium and magnesium found in leafy, green vegetables. How could the researchers design an experiment to determine the effects of potassium and magnesium on sleep? BIU E E SQuestion 7 (5 points) Select all designs which describe an observational study that is not a survey. O a 200 voters are randomly selected and asked how they will vote in the upcoming election. O b 60 pieces of lumber are randomly selected. Half of those are randomly assigned to be treated with a new sealer. Three months later the level of rotting in all the pieces is recorded. O c 100 pregnant women are randomly selected. For 8 weeks, the level of iron in their blood and their vital signs are recorded. O d 400 incoming sixth grade students are randomly selected. Researchers record their results on a reading test at the beginning and end of the school year and compare the level of improvement seen in students at elementary schools to students at middle schools. 30 people apply to test a new mattress. 100 of these customers are selected randomly to receive the new mattress and the others are given an older version. After 6 months they are asked to rate their satisfaction with the mattress. Question 8 (5 points) A researcher discovers that the diameter of a person's pupil in thier eye is directly related to how beautiful they find the image they are looking at. The researcher wants to know whether reading an article about climate change influences people's perceptionof pictures of a city in terms of beauty. 100 people have volunteered to be a part of the study. The researcher's assistants propose 3 options to run the study. The volunteers are shown into an art gallery with the pictures of the city on the wall and the article in a program given to the people when they enter. The researcher will keep track of who reads the program and measure the pupil size of people as they view the pictures. What type of study is described: survey, observational study, or experimental study?Question 9 (5 points) A researcher discovers that the diameter of a person's pupil in thier eye is directly related to how beautiful they find the image they are looking at. The researcher wants to know whether reading an article about climate change influences people's perceptionof pictures of a city in terms of beauty. 100 people have volunteered to be a part of the study. The researcher's assistants propose 3 options to run the study. The volunteers look at the pictures of the city and rate how beautiful they find the pictures on a scale off 1 to 10. They then read the article and look at the pictures again, rating them on the same scale. What type of study is described: survey, observational study, or experimental study? BIU Question 10 (5 points) What type of study would you conduct if you wanted to know how many miles a week on average students on the school's cross country team run during the summer? Explain your reasoning