A Random Sample of Females Was Observed to Exhibit a Lower

question 65

Multiple Choice

A random sample of females was observed to exhibit a lower average level of self-esteem than a random sample of males. To assess the likelihood that this observed difference reflects a real difference in the average self-esteem of the total population of males and females, it is necessary to

• A) construct a scatterplot.
• B) calculate a correlation coefficient.
• C) plot the distribution of self-esteem levels among all males and females.
• D) conduct a test of statistical significance.