# PSYC 355-A cognitive psychologist wants to find out if time

A)A cognitive psychologist wants to find out if time spent solving logic problems predicts higher scores on a math exam for a group of college algebra students. What kind of analysis is best suited to help answer this question?1a) independent means t-test2a)one-way ANOVA3a)correlation analysis4a)bivariate regression analysisB)If an experimenter obtains a correlation coefficient of .43 that is significant at the .01 significance level with 19 degrees of freedom, these results would be presented in a research article as1b)p = .01, r = .43.2b)r(19) = .43, significant.3b) r(.43) = significant.4b)r(19) = .43, p .01.C)does a person’s letter grade in statistics depend on whether he or she is a member of a Greek organization? In three statistics classes, data is collected on the letter grades of students belonging to Greek organizations and of students who are not members. Which technique should be used to analyze the data?1c) independent-samples t test2c)paired-samples t test3c)Wilcoxon signed-rank test4c)MannâWhitney U testD) Chi-square tests for independence assess whether:1d)two scale variables are independent of each other.2d)the means of two samples differ significantly from each other.3d) two nominal variables are independent of each other.4d) the distributions of two variables are normally distributed.

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