A scientist is interested in how breakfast cereal affect short-term blood sugar levels. Two groups of human volunteers (n = 35 in each) are given either a standard cereal or Special J, a cereal designed to sustain higher blood sugar levels for 4 hours. After eating, each subject's blood sugar level is monitored (testing every 20 minutes) until it drops below 100, or until 5 hours has elapsed. The collected data are below. These data are the elapsed time from eating until blood sugar dropped below 100. If blood sugar did not drop below 100 after 5 hours, the subjects were given the special value: -99. (Hint: you'll need to fix both the format of the file and the special values to get these data analyzed).

control	special J
80	80
190	120
90	-99
170	180
90	250
-99	160

1. Provide the most appropriate graph of the data.

2. What two kind of censoring are present in these data?

3. Which statistical test is most appropriate? What is the statistical null hypothesis?

4. Provide appropriate descriptive statistics.

5. Provide a numeric and verbal description of the results of the scientific hypothesis test. Provide follow-up comparisons only if needed.