A researcher is interested in whether students who are musicians have higher intelligence test scores than students in the general population. The researcher predicts that playing a musical instrument is associated with higher intelligence test scores. The researcher selects a sample of 75 musicians from local high schools and gives them an intelligence test. The mean for the sample is 105 . The
mean for the general population (µ) is 100 with a standard deviation (µ) of 15 . What is zobt for this sample?
a. .33
b. 1.89
c. 2.89
d. 3.25
c
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Summarize current views regarding infants' perception of pain.
What will be an ideal response?
When using Wilcoxon's test for paired samples, subjects whose two scores are equal, yielding a difference score of zero, are usually
a. given a random sign. b. omitted from the data. c. punished. d. given a plus sign for one score and a minus sign for another.
Which of the following is the gerontologist who found that you are most likely to stay mentally sharp in old age if you are involved in intellectually stimulating activities, maintain your perceptual processing speed by staying active, have a flexible personality, and are married to a intelligent spouse?
a. Carroll Izard b. Noam Chomsky c. Warner Schaie d. Elisabeth Kübler-Ross
Neurons that pass from the hypothalamus into the _____ are MOST susceptible to stimulation that produces pleasure.
A) medulla B) nucleus accumbens C) basal ganglia D) pineal gland