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Before the presidential debates,it was expected that the percentages of registered voters in favor of various candidates would be as follows.
After the presidential debates,a random sample of 1200 voters showed that 540 favored the Democratic candidate;480 were in favor of the Republican candidate;40 were in favor of the Independent candidate,and 140 were undecided.We want to see if the proportion of voters has changed.
a.Compute the test statistic.
b.Use the p-value approach to test the hypotheses.Let = .05.
c.Using the critical value approach,test the hypotheses.Let = .05.
Sigmund Freud
An Austrian neurologist and the founder of psychoanalysis, a clinical method for treating psychopathology through dialogue between a patient and a psychoanalyst.
Erik Erikson
An influential psychoanalyst known for formulating the theory of psychosocial development, which outlines eight stages through which a healthily developing human should pass from infancy to late adulthood.
Carl Jung
A Swiss psychiatrist and psychoanalyst who founded analytical psychology, focusing on concepts such as the collective unconscious and archetypes.
Carl Rogers
An influential American psychologist who founded the humanistic approach to psychology focusing on individual potential for growth and the importance of free will.
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