nutrition 3050 exam3

"Green is the prettiest color" is a _______ hypothesis because it is _______. a. poor; not true b. poor; not testable c. good; testable d. good; true

b. poor; not testable

Which approach would be most appropriate for testing the hypothesis that taking practice tests improves learning more than studying alone does? a. Experimental research b. Correlational research c. Surveys of representative samples of students d. Case studies of high-achieving students

a. Experimental research

An unethical experimenter wants to test the relationship between discomfort and aggression. On a hot day, she turns off the air conditioning in one dorm and leaves it on in another, then has her research assistants count occurrences of verbal aggression in common areas of the buildings. Students in the air-conditioned dorm would be the _______, and students in the overheated dorm would be the _______. a. representative sample; random sample b. study population; sampling frame c. control group; experimental group d. independent sample; dependent sample

c. control group; experimental group

A correlation of −0.80 between meditation and anxiety symptoms would indicate a. meditation and anxiety symptoms are unrelated. b. meditation effectively reduces anxiety symptoms. c. anxious people are more likely to meditate. d. meditation predicts lower levels of anxiety.

d. meditation predicts lower levels of anxiety.

A researcher would be most likely to find a negative correlation between _______ and_______. a. shyness; party attendance b. hopelessness; depression c. conscientiousness; grade point average (GPA) d. occupational success; self-esteem

a. shyness; party attendance

You feel sick after eating leftovers you found in the back of the refrigerator. Occam's razor would favor the hypothesis that you have a. food poisoning. b. been poisoned by your roommate. c. stomach cancer. d. contracted swine flu.

a. food poisoning.

To identify the most popular exhibits at a science museum, visitors were asked every day for six weeks to rate how much they enjoyed each exhibit. The data were analyzed to look for age and sex differences in exhibit preferences. This was an example of? a. naturalistic observation. b. survey research. c. case study research. d. experimental research

b. survey research.

Which of these correlations has the least predictive value? a. −0.75 b. −0.35 c. +0.10 d. +0.50

c. +0.10