Suppose the cars in the Peninsula College parking lot are th…
Suppose the cars in the Peninsula College parking lot are the observational units. A portion of the data collected is shown in the table below. *If the table does not appear, click here to download it. QUESTION. Pick either (a) or (b): a) Specify another variable that could be measured or categorized for this study. Be sure to phrase it as a variable. OR b) Write a research question that can be addressed with the data provided in the table. (A question that cannot be answered using the data in the table will not receive credit.)
Read DetailsA randomized experiment was done by randomly assigning each…
A randomized experiment was done by randomly assigning each participant either to walk for half an hour three times a week or to sit quietly reading a book for half an hour three times a week. At the end of a year the change in participants’ blood pressure over the year was measured, and the change was compared for the two groups. QUESTION: The two treatments in this study were…
Read DetailsYou and your friend conduct separate observational studies t…
You and your friend conduct separate observational studies to estimate the proportion of PC students that prefer Hawaiian pizza with pineapple and bacon over other varieties of pizza. Consider the population to be all PC students. Your friend randomly selects 20 students from the school and uses the sample proportion of students who prefer Hawaiian pizza to estimate the population proportion of students who prefer Hawaiian pizza. You also randomly select your own sample of 20 students and find the sample proportion of students who prefer Hawaiian pizza. QUESTION: Are the populations the same for your friend’s study and for yours?
Read Details