19.1 Assume you have collected a random sample of first-year students at a local community college and given them a general survey that included a number of items. A series of questions results in self-esteem ratings, and part of their official record includes their IQ. You want to calculate a correlation coefficient for these two variables including a significance level and then chart the results and add the Fit Line.

Select the correct correlation coefficient, write the null and alternate hypotheses, and interpret the results. A summary of the data follows: