A local newspaper reports that young women in a town (i.e., a known population) sleep an average of only 5 hours per night. However, a health psychologist thinks that women in the town who are enrolled in college sleep more than that. The psychologist
randomly selects 200 women from the college and asks them to accurately record their hours of sleep, and the women report that they sleep an average of 7 hours per night. What test would the psychologist use to determine whether this mean difference is statistically significant?
A) ANOVA
B) t test for dependent means
C) t test for a single sample
D) regression
Answer: C
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