On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.894. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. E Click the icon to view the critical values table. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. O A. No, since 0.894 is greater than the critical value for 30. O B. Yes, since 0.894 is less than the critical value for 30. O C. No, since 0.894| is less than the critical value for 30. O D. Yes, since 0.894 is greater than the critical value for 30 What does this result mean? O A. There is no linear relation between countries in which students answered a greater percentage of items in the background questionnaire and higher mean scores on the exam, O B. Countries in which students answered a lesser percentage of items in the background questionnaire tended to have higher mean scores on the exam. O C. Countries in which students cheated on the exam also cheated on the items in the background questionnaire O D. Countries in which students answered a areater percentaoe of items in the backaround auestionnaire tended to have hiaher mean scores on the exam.

Which statistic would you use if you are interested in comparing the mean number of hours worked by sex.

Ms. Jones created a graph of her students’ scores on their most recent multiple-choice quiz. Use the histogram to describe the average multiple-choice score.

When dating someone, what matters more to you: looks or personality? This question was the focus of a community college student’s class project for an introductory statistics course. She devised a 25-point scale. An answer of 1 means “personality matters most and looks don’t matter at all.” A score of 25 means “looks matter most and personality does not matter at all.” Her hypothesis is that the mean scores for males and females will differ, but she does not have an opinion about which population will have a higher mean score. Here are her hypotheses. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 She chose a random sample of 10 classes from the schedule at Los Medanos College and distributed surveys in those classes. Survey respondents totaled 170 students: 85 females and 85 males. We used her data to run a hypothesis test for a difference in two population means.  Here are the results: he results:   t df p Cohen's d Gender -4.11 168 0.0000 -0.629   Which conclusion is the most accurate…