The delivery times for the customers who did not place a subsequent order..
Answer the questions below to the best of your ability. When appropriate, include the Statistix printout in the indicated spot for the problem. When making interpretations, always interpret in the words of the problem (WOP). I have indicated where the TAs will be specifically looking for the words!!! Good luck!
1. Answer Questions a-c from Exercise 1.30 (found on Page 28)
a.
b
c
2. Use the Made-to-order data set (MTO) from Exercise 2.34 (p. 63) to answer the following questions.
a. Create a stem and leaf plot for the delivery times and insert it in the text box below:
b. Highlight (or bold) the delivery times for the customers who did not place a subsequent order. Answer the question posed in the problem.
Student Data Portion
1. Identify your experimental unit for this project: _______________________________
2. Identify the four variables that you collected data for your project and give the type of variable (Quantitative or Qualitative) for each.
Variable 1: ________________ Type: ___________________
Variable 2: ________________ Type: ___________________
Variable 3: ________________ Type: ___________________
Variable 4: ________________ Type: ___________________
3. Include the Descriptive Statistics Printout from Quiz 2 here:
a. Use the standard deviation to tell me where you expect most of your prices to fall (WOP).
b. Calculate the z-score for the largest mileage in your sample. Show the z-score for it below. Is it a suspect outlier, an outlier, or an expected mileage? Why?
Z = _________
c. Give a practical interpretation for the confidence interval for mileage shown in the printout (WOP).
d. What is the theoretical interpretation for the meaning of “95% confident” that you stated in part c?
4. Include the Test of Hypothesis Printout from Quiz 3 here:
a. State the null and alternative hypothesis you were asked to test:
Ho: _________________________
Ha: _________________________
b. Identify the test statistic and p-value from the printout:
Test Statistic: _________________________
P-value __________________________
c. State the conclusion for the test. You can choose alpha. (WOP)
d. Ignoring the need for a random sample (since I told you not to worry about that so that you could collect your data quickly, what other assumption is necessary for this conclusion to be valid? (WOP)
5. Include the first part of the AOV Printout from Quiz 3 here:
a. State the null and alternative hypothesis you were asked to test:
Ho: _________________________
Ha: _________________________
b. Identify the test statistic and p-value from the printout:
Test Statistic: _________________________
P-value __________________________
c. State the conclusion for the test. You can choose alpha. (WOP)
d. What assumptions are necessary for this test to be valid (WOP)
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The delivery times for the customers who did not place a subsequent order.
