Which of the following is a limitation of ex post facto research?
a. lack of control
b. lack of manipulation
c. danger of improper interpretation
d. a and b
e. All of these are true.
E
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The Dietary Guidelines for Americans recommend all the following lifestyle behaviors EXCEPT:
a. eliminating carbohydrates from one's diet b. implementing practices to reduce food-borne illnesses c. consuming a variety of fruits and vegetables daily d. aiming for a healthy weight
What is the primary reason to teach and use Scientific Notation?
a) Convenient way to represent very large or small numbers. b) A number is changed to be the product of a number greater or equal to 1 or less than 10 multiplied by a power of 10. c) Easiest way to convey the value of numbers in different contexts. d) To determined by the level of precision appropriate for that situation.
Robert's comment is most closely related to which step in the problem solving process?
Mrs. Wang has presented her students with the following problem: We have a quart of pure alcohol. If we add a cup of water to the alcohol, what percent of the new mixture is alcohol? She then says, "Let's look at what we're given and what we want." "We want the total amount of the mixture we have together," Robert suggests. After some discussion, the class decides that the mixture is 75% alcohol. "I don't think that's right," Kathy observes. "We have 5 cups of mixture altogether, and only one of those cups is water." a. Identifying the problem b. Devising a plan c. Implementing the plan d. Evaluating the results
Which of the following may occur as a normal behavioral problem in early childhood?
A. difficulties in going to bed and in sleeping B. eating difficulties C. substance abuse or addiction disorders D. all of the above are correct E. the first and second choices only