Stephen plots the results of his data using a scatterplot. Which of the following conclusions could he potentially draw from a scatterplot?
A. High school students with a higher GPA are more likely to attend college than high school students with a lower GPA.
B. People who drink coffee in the morning are more likely to wake up earlier than people who don't drink coffee.
C. Men are more likely to have ever used marijuana than women.
D. There is a relationship between higher depressive symptoms and greater alcohol consumption.
Answer: D
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Research on high blood pressure indicates that ____
a. there is a much higher percentage of men with hypertension b. there are higher prevalence rates for older women than older men c. about one quarter of U.S. adults require treatment for hypertension d. about 10% of U.S. adults are unaware of their hypertension
Eighteen overweight volunteers weighed themselves before and after a two-week diet. The appropriate design for testing the significance of the difference between the means is
a. related-samples t-test. b. independent-samples t-test. c. one-sample t-test. d. z-test.
In the Bickers family, the mom yells loudly at her misbehaving kids. Yet, in what way does her yelling reinforce bad behavior?
a. The kids' warped personalities interpret pain as reward. b. Mom's yelling gives attention, which is rewarding. c. Hearing mom's yelling arouses the children's interest in postconventional moral reasoning. d. Passive targets of yelling think they are winners.
Cynthia has been diagnosed with a tumor in the vicinity of her lateral hypothalamus. Which of the following symptoms has Cynthia most likely experienced as a result of her condition?
A. She has experienced an unexpected weight loss. B. She has experienced insulin resistance. C. She has experienced a sudden, large weight gain. D. She is unable to eat fatty foods.