What is the advantage of using the systematic steps followed by scientists for conducting scientific research?
a. It guarantees accuracy of a research work.
b. It makes the scientific method more likely than other methods to give an accurate knowledge of the world.
c. It ensures that all research problems, including those that cannot be solved by scientific investigation, are also pursued.
d. It provides a means for researchers to conduct their observation without the need to get their work reviewed prior to publishing it.
Answer: b
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Recent research into what causes working memory deficits in older adults has found that
A. older adults have more trouble accessing multiple pieces of information. B. older adults have more trouble juggling all of the information at once. C. verbal working memory is much more affected than spatial working memory. D. testing at night improves older adults' performance.
Which of the following statements about early Native American societies is FALSE?
A. Most Native Americans lived in tribal societies based on lineages, and these ranged from hunting-gathering groups to larger groups using sophisticated horticultural methods. B. Young women may have married soon after reaching puberty, around ages 12-15, whereas young men were several years older. C. When European settlers arrived, there were nearly18 million natives with diverse customs, speaking about 300 different languages. D. About one-third of the tribes were matriarchies.
Since the 1970s, the real dollar value of the minimum wage has
a. increased b. declined c. been determined by the states themselves d. remained constant
Typically, after obtaining a statistically significantF ratio, researchers will then compare
A) each mean to the other means using protected t tests. B) the obtained Z scores for each population. C) the obtained F scores for each population. D) the variances in addition to the means using protected t tests.