A team of researchers found statistically significant differences between their study groups. In other words,
A. they have proven their hypothesis.
B. they accept the null hypothesis.
C. they reject the null hypothesis.
D. they accept the alternative hypothesis.
Answer: C
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Which of the following is true about the findings of the studies using Cattell's test?
a. Three of the 16 source traits are determined by hereditary factors. b. A Turkish translation of the 16 PF test has been found to be valid measure of personality differences. c. The 16 PF Test can't be distorted or faked like the other personality tests. d. Partners in stable marriages were found to possess complementary traits.
Which statement concerning children and marital satisfaction is true? a. Couples with children show a decline in marital satisfaction while those without children show an increase. b. Couples who are child-free due to infertility tend to have high levels of marital satisfaction
c. African-American couples tend to show little increased conflict due to the birth of a child. d. The birth of a child is usually viewed as a positive event even though it is associated with a decrease in marital satisfaction.
Dr. Smith tells Sarah that her developing embryo is showing distortions in the development of its circulatory system. Sarah will learn that the problem is within cells of the ____ layer.
a. Mesoderm b. Placenta c. Endoderm d. Ectoderm
The null hypothesis gets its name from the meaning of the word null, which is _____
a. zero c. empirical b. need d. testable