When we fail to reject null hypothesis, then we know for certain that
a. the mean of the sample equals the mean of the population
b. the mean of the sample differs from the mean of the population
c. the mean of the sample is a biased estimator
d. none of these, since the statistical decision is a probability statement and not a
statement of certainty
d
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Explain how we use the t Table to make a hypothesis testing decision.
What will be an ideal response?
L.L. Thurstone suggested that intelligence should be conceptualized as:
a. seven primary mental abilities that arise from a single general intelligence factor b. two main factors and five subfactors c. seven primary mental abilities that are independent of each other d. a set of abilities that are largely unaffected by experience
__________ is a psychopharmacological treatment for amyotrophic lateral sclerosis (ALS).
A. Riluzole B. Deprenyl C. L-DOPA D. Interferon ?
Which of the following does not represent one of the criteria for deriving a cause-effect conclusion in experimental research?
a. Covariation of variables b. Causal time sequence c. Results analyzed with ANOVA d. Elimination of other plausible causes