Download Report

Stats for Business MINITAB Report 2 Directions
DUE: At beginning of Discussion one week after your TA reviews Topic 9 Worksheet in computer
lab Discussion. Turn in a printed, written report, in person, at beginning of Discussion. (Electronic
copies sent by email do not qualify as an official submission and so the lateness penalty applies.)
• Odd section numbers (A1, A3, . . . , A19)
due Tuesday April 28
• Even section numbers (A2, A4, . . . , A18)
due Thursday April 30
(Lateness penalty: 25 points immediately after end of Discussion on the due date and 25 additional
points for each additional 24 hours.)
DIRECTIONS:
• Submit a hand-written or word-processed report which answers the four questions for Problems
A1–A4 and B1–B3. Label each answer correspondingly for easy reading.
• Attach and staple a word-processed MINITAB Output Appendix to the end of the report. The
appendix should contain the following:
◦ A “time stamp” from the beginning of your MINITAB Session Window to document the
date and time of your work. For example:
◦ Copy-and-paste MINITAB output from 7 hypothesis tests
• Working Arrangements
◦ TAs and tutors may provide assistance with Topic 9 Notes and Topic 9 Worksheet but
may not provide direct assistance with MINITAB Report questions. Please respect these
guidelines.
◦ If you’re missing Topic 9 WS answers from Discussion, you may hand-copy answers at
any Schaeffer Hall TA office hour. (You may see any TA, not just your own.)
◦ You may discuss the report with other students but your particular answers, MINITAB
output, and written report must be your own.
◦ Use MINITAB 16 in the 41 Schaeffer Hall Computer Lab or other campus ITC’s or use the
university’s Virtual Desktop. (Directions for Virtual Desktop are found on the Minitab
Report 2 Pre-Assignment posted on the Minitab Reports page of the stats website.)
1
GRADING GUIDELINES:
(100 points)
• Report has valid time stamp, is stapled with answers that are legible and easy to read.
(10 points)
(A full 10 points are deducted if any of these three conditions is not satisfied.)
• Report provides answers exactly as numbered and lettered in this document. (10 points)
• Specific answers and included MINITAB output (77 points)
• Base score (3 points)
Introduction
This report uses the credit-card example and data in the Topic 9 Notes and Worksheet. So first
complete the Topic 9/Minitab Report 2 Pre-Assignment and review your answers to the Topic 9
Discussion Worksheet.
(If you’re missing Topic 9 WS answers from Discussion, you may stop by any Schaeffer Hall TA
office hour to hand-copy them.)
Problem A Questions
• Problem A1
Answer Data Scenario #2, Question 1 using the same format as used in the Topic 9 WS: Use
5% significance and
1. Write down hypotheses HA and H0 .
2. Use MINITAB to calculate the P -value.
◦ Write down the exact P -value from the MINITAB output (include all available decimal places) as the answer to this question.
◦ Copy and paste the relevant MINITAB output from the Session Window to the
MINITAB Output Appendix. Label the output (Problem A1, etc.) for easy reading.
3. Make a decision and support it numerically.
4. Interpret.
• Problem A2
Answer Data Scenario #2, Question 2 using the same format.
• Problem A3
Answer Data Scenario #3, Question 1 using the same format.
• Problem A4
Answer Data Scenario #3, Question 2 using the same format.
(continued)
2
Problem B Questions
The introduction to the Topic 9 Notes describes Capital One’s delinquency problem. Suppose that
the historical delinquency rate among Capital One customers for all of the company’s credit-card
products is 30%.
Answer the following research question under Data Scenarios #1, #2, and #3:
Question 3
Is the delinquency rate for Credit Card A lower than the historical delinquency rate of
30%?
Use 5% significance for all tests and define the parameter p as
p = proportion of all Credit Card A customers who are delinquent
Tip: To confirm that your MINITAB steps are correct, consider calculating the P -value by hand and
compare to MINITAB’s P -value. (But in your report you must provide the exact MINITAB P -value
and document your MINITAB work by copying the relevant MINITAB output to the MINITAB Output
Appendix.)
• Problem B1
Answer Data Scenario #1, Question 3 using the same format (i.e. the same four steps) as
used in Problem A questions.
• Problem B2
Answer Data Scenario #2, Question 3 using the same format.
• Problem B3
Answer Data Scenario #3, Question 3 using the same format.
(end of directions)
3