To estimate the mean number of hours a student at a major university spent in the library, a researcher obtained the list of students from the registrar's office, from which she can select a random sample of 200 students. This list is a ________.
Fill in the blank(s) with correct word
Q. 2True or False: The professor of a business statistics class wanted to find out the mean amount of time per week her students spent studying for the class. Among the 50 students in her class, 20 were freshmen, 50 were sophomores and 30 were juniors. She decided to select 2 students randomly from the freshmen, 5 randomly from the sophomores and 3 randomly from the juniors. This is an example of a systematic sample.
Indicate whether the statement is true or false
Q. 3True or False: Systematic samples are less efficient than a stratified sample.
Indicate whether the statement is true or false
Q. 4True or False: When participants are allowed to self-select into the sample, you have a nonprobability sample.
Indicate whether the statement is true or false
Q. 5True or False: Items or individuals in a judgment sample are chosen according to their probability of occurrence.
Indicate whether the statement is true or false
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