When all the points in a scatter plot lie directly on the regression line
of Y and X, then
a. X has caused Y
b. the correlation must equal 0
c. the correlation cannot be calculated
d. the correlation must equal +1.00
d
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Which of the following statements MOST accurately describes how visual information is transmitted to the brain?
a. Signals from each eye only go to the corresponding (same) hemisphere of the brain. b. Signals from both eyes go to both hemispheres of the brain. c. Signals from each eye only go to the opposite hemisphere of the brain. d. Signals from the fovea of each eye go to the left hemisphere, and signals from the remaining areas of the retina go to the right hemisphere.
The longevity of women tends to be higher than that of men in most developed countries, but that advantage is not found in developing countries. Which of the following is a reason for this loss of extra female longevity?
a. Women are more susceptible to fatal infections in developing countries, because they do not work outside of the home and are not physiologically able to develop natural immunities. b. Women are not provided with health care in many developing countries, and thus often die before the age of 30 years. c. There are higher rates of death in childbirth in developing countries, which partially explains the loss of female longevity advantage. d. The rates of honor killings of women are so high in developing countries that the longevity advantage is eliminated.
Individuals who learned two languages in childhood show brain activity for both languages in ______; individuals who learned another language later in life show brain activity for the second language in ______.
A. the same area; the same area B. the same area; a different brain area C. different brain areas; the same area D. different brain areas; different brain areas
In the United States today, about 50% of sexually active adolescents have a sexually transmitted disease
Indicate whether the statement is true or false