STAT 100 Midterm: STAT100 ALL-SECTIONS SPRING2001 0000 MID EXAM 4

• School: University of Maryland
• Department: Statistics and Probability
• Course: STAT 100
• Professor: All

Document Summary

You may use one page of notes (writing/xeroxing allowed both sides). Di erent parts of a problem have equal weight unless otherwise indicated. Put a box around the nal answer to a question. ***note: when you are asked for a con dence interval, do not take the time to evaluate numbers on your calculator. Just write out the appropriate formula, with all appropriate numbers substituted: a university o cial wishes to estimate the proportion p of students who hold part-time jobs. From this group, 40 subjects are randomly selected to be assigned to treatment 1 and the remaining 48 subjects are assigned to treatment 2. The means and standard deviations of the responses to the treatments are. Determine a 95% con dence interval for 1 2, where 1 is the mean response to treatment. 1 and 2 is the mean response to treatment 2. **************there are more problems on the back side***************