Question 35 (1 point) What is the null hypothesis of a one-tailed repeated-measures research study if a treatment is expected to increase scores on a questionnaire, relative to pre-test scores on a questionnaire? There is no decrease in scores after treatment. There is no increase in scores after treatment. There is a decrease in scores after treatment. There is an increase in scores after treatment. Question 36 (1 point) What is indicated by a positive value for a correlation? O increases in X tend to be accompanied by increases in Y O increases in X tend to be accompanied by decreases in Y increases in X tend to be accompanied by decreases in Y up to a point and then are accompanied by increases in Y increases in X tend to be accompanied by increases in Yup to a point and then are accompanied by decreases in Y Question 37 (1 point) What would the scatter plot show for data that produce a Pearson correlation of r +0.88? points widely scattered around a line that slopes down to the right points widely scattered around a line that slopes up to the right O points clustered close to a line that slopes up to the right points clustered close to a line that slopes down to the rightQuestion 32 (1 point) For which of the following situations would a repeated-measures research design be appropriate? comparing self-esteem for students who participate in school athletics versus those who do not comparing mathematical skills for girls versus boys at age 10 years comparing verbal problem solving skills for science majors versus art majors at a college ()comparing pain tolerance in a group of individuals with and without their medications Question 33 (1 point) A repeated-measures study using a sample of n = 20 participants would produce a t statistic with df = _ O 20 O 19 09 39 Question 34 (1 point) Which of the following statements is not consistent with the assumptions necessary when computing a repeated-measures & statistic? The population distribution of difference scores (D values) must be normal if the sample size is relatively small (n 30). O) The scores within each treatment must be independent