Answer: D. two-sample z-test for a difference in population proportions
Step-by-step explanation:
The options for the given questions were missing. The options are as follows:
A one-sample z-test for a sample proportion
B one-sample z-test for a population proportion
A
C two-sample z-test for a difference in sample proportions
D two-sample z-test for a difference in population proportions
Solution:
Sample proportions are used to estimate population proportions.
We are given the sample proportion of students from one state who ordered a yearbook = 70/150
We are also given the sample proportion of students from the other state who ordered a yearbook = 65/100
Since there are 2 samples and we want to investigate if there is a difference between 2 population of students,
Therefore, the most appropriate method for analyzing the results is
D. two-sample z-test for a difference in population proportions
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