Question: A scientific study on gerbil population growth results in the data below….. The least squares regression line modeling this data is given by yˆ=13.3+5.567x. What is the intercept of the regression line? Round your answer to one decimal place.
Question: True or False: The more mangoes you eat, the more rashes you get.
Question: Suppose that a large controlled experiment tests whether caffeine improves reaction times. A very large number of randomly selected participants are randomly given identical-seeming pills with varying doses of caffeine (including none) and then given tests of reaction times under the same conditions. The experiment finds a strong negative correlation between caffeine dose and reaction time. (Note that lower reaction times are better.)…. Identify what can be concluded based on this information.
Question: True or false: The larger the truck, the larger the load it can fit.
Question: An observational study shows a moderate negative correlation between the price of the car a person owns and the happiness of that person. Answer the following question based only on this information….. True or false: It can be concluded that in general, owning a more expensive car makes people less happy.
Question: True or False: The larger the number of cavities, the older the person.
Question: True or false: Increases in height cause increases in shoe size.
Question: Suppose that data collected from police reports of motor vehicle crashes show a moderate positive correlation between the speed of the motor vehicle at the time of the crash and the severity of injuries to the driver. Answer the following question based only on this information… True or false: It can be concluded that the faster a motor vehicle is traveling at the time of a crash, the more severe the injuries to the driver are.
Instituition / Term
Term
Fall 2020
Institution
MATH 225N Statistical Reasoning for the Health Sciences
