noeliaalvarado
11.04.2020 •
Mathematics
A study reports that 75 percent of young adults in a county get their news from online sources. A sociologist believes that the percentage is actually greater than 75 percent. The sociologist will select a random sample of young adults from around the county to interview. Which of the following is the most appropriate method for investigating the sociologist’s belief?
A. A one-sample zz-test for a difference in population proportions
B. A one-sample zz-test for a sample proportion
C. A one-sample zz-test for a population proportion
D. A two-sample zz-test for a difference in population proportions
E. A two-sample zz-test for a difference in sample proportions
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Ответ:
C. A one-sample z-test for population proportion
Step-by-step explanation:
You only need one sample to compare to the null hypothesis and to determine z.
It will be for population propotion because were are trying find evidence for the population not just the sample.
Ответ:
(–1 + 21) + (i + 5i) hope this helps