A principal is interested in determining if people at her school like cats or do
ID: 3040009 • Letter: A
Question
A principal is interested in determining if people at her school like cats or dogs more. She takes a random sample of 40 students and records whether each student likes cats more or dogs more. What test should the researcher use (assuming all assumptions for the test are satisfied?)
One sample t test
Two sample t test
One proportion z test
Two proportion z test
IncorrectQuestion 24
0 / 0.5 pts
Suppose that, in the above example, instead of taking a sample of 40 students, the principal records whether every single student in the school likes dogs or cats better. If the population of interest is still the students at her school, then she has recorded:
a statistic
a parameter
neither a statistic nor a parameter
Explanation / Answer
1) The researcher should use
Two proportion z test
As the researcher has to see whom does the people in school likes more, cat or dog.
2) As the principal is recording every response about the liking of the people of the school so she has recorded A parameter
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