Researchers have found that eye color and risk of alcoholism are related. Jonathan Bassett and James Dabbs (2001) speculated that because light-eyed people are generally less responsive to drugs in general, they might drink more alcohol before they felt its effects. This increased exposure might make light-eyed people more likely to become dependent on alcohol. So, they examined a very large "archival" sample-a set of records that been collected in previous research-and looked at this "old" data in a new way. First, they went to the records of the Georgia Board of Pardons and Paroles and looked at the data on eye color and history of problems with alcohol abuse for a set of Caucasian male inmates of the Georgia Prison System. They separated the sample into two groups: "light-eyed" (blue, gray, green, and hazel eyes) and "dark-eyed" (brown and black eyes). They then counted the number of inmates in each group who had been identified in the prison records as having a history of problems with alcohol. The data in Table 3.20 are representative of what they found. Use the data to answer the questions that follow.
$$
\begin{array}{l|c|c|c}
\hline \text { History of Alcohol Abuse Problems } & \text { Light-colored Eyes } & \text { Dark-colored Eyes } & \text { Row Totals } \\
\hline \text { With } & 2,633 & 1,797 & \\
\hline \text { Without } & 3,637 & 2,933 & \\
\hline \text { Column totals } & & & \\
\hline
\end{array}
$$
a. Why did Bassett and Dabbs look at the records of only Caucasian inmates?
b. How many inmate records, in total, were examined?
c. How many inmates with light-colored eyes were in the sample?
d. How many inmates with dark-colored eyes were in the sample?
e. How many inmates had a history of alcohol abuse?
f. Construct two pie charts, one for each group (light-eyed and dark-eyed), showing the
percentage of inmates in each group with and without a history of alcohol abuse.
g. Is there evidence of a relationship between eye color and alcohol dependency?