Healing Rate A medical researcher wanted to determine the effectiveness of coagulants on the healing rate of a razor cut on lab mice. Because healing rates of mice vary from mouse to mouse, the researcher decided to block by mouse. First, the researcher gave each mouse a local anesthesia and then made a 5-mm incision that was 2 mm deep on each mouse. He randomly selected one of the three treatments and recorded the time it took for the wound to stop bleeding (in minutes). He repeated this process two more times on each mouse and obtained the results shown.

(a) Explain how each mouse forms a block. Explain how blocking might reduce variability of time to heal.

(b) Normal probability plots for each treatment indicate that the requirement of normality is satisfied. Verify that the requirement of equal population variances for each treatment is satisfied.

(c) Is there sufficient evidence that the mean healing time is different among the three treatments at the  level of significance?

(d) If the null hypothesis from part (c) was rejected, use Tukey’s test to determine which pairwise means differ using a familywise error rate of .

(e) Based on your results for part (d), what do you conclude?

There is always room for improvement in regard to an existing vision and mission statement. A major competitor to Nestlé is Unilever. Those two firms for example produce one third of all the ice cream sold on the planet. Go to the Unilever’s website, visit the “our vision” page, and review their corporate vision statement and purpose (mission) statement. Instructions Step 1 On a separate sheet of paper, write the nine mission statement components down the left side. Step 2 Write “yes” or “no” beside each number to indicate whether you feel the Unilever mission statement has included the respective component. For any component that you record a “no,” write a good sentence to encompass that component. Step 3 Turn your paper in to your instructor for a grade. Step 4 Write a new and improved vision statement for Unilever