Twenty percent of all ballet dancers are said to have traces of ankle injury. Of 160 randomly selected ballet dancers, 40 showed traces of ankle injuries. Answer the following for a two-tailed test. What test would you use?
What will be an ideal response?
Correct Answer:
z-test for the proportion
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An example of a federal law that requires schools to provide safe Internet access is:
a. The Digital Footprint Act b. The Responsible Internet Access Act c. The Safe Access to the Internet Act d. The Children's Internet Protection Act
The percentage of American families that earn a medium budget that allows a family of four to meet basic requirements (approximately $47,000) is
a. 10%. b. 33%. c. 50%. d. 77%.
Hearing losses resulting from both conductive and sensorineural hearing impairments.
a. conductive hearing loss b. sensorineural hearing loss c. mixed hearing loss d. central hearing loss
Both the causal-comparative and experimental research methods are similar in that they:
A. require at least one categorical variable. B. require random assignment of subjects. C. require repeated measurement of subjects. D. require random selection of subjects.