To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. Suppose the before and after exam scores are both normally distributed. Which of the following tests will be the most appropriate?
A) Pooled-variance t test B) McNemar test
C) Wilcoxon rank sum test D) Paired t test
Question 2
The use of preservatives by food processors has become a controversial issue. Suppose 2 preservatives are extensively tested and determined safe for use in meats. A processor wants to compare the preservatives for their effects on retarding spoilage. They will choose to use the preservative that can keep the meat fresh for the longest amount of time. Suppose 15 cuts of fresh meat are treated with preservative I and 15 are treated with preservative II, and the number of hours until spoilage begins is recorded for each of the 30 cuts of meat. Suppose the variability of the number of hours until spoilage is the same for meat treated by both preservatives but the normal probability plots reveal that the number of hours until spoilage is right-skewed for the 15 cuts treated by preservative I and left-skewed for the 15 cuts treated with preservative II. Which of the following tests will be the most appropriate?
A) Levene's test B) Wilcoxon rank sum test
C) Pooled-variance t test D) Paired t test
Rinne Test, Assessing Bone Conduction
Coagulase Test
Using the voltmeter leads from a starting and charging test unit to measure the voltage drop ...
The Schrader valve on this General Motors 3800 V-6 is located next to the fuel-pressure regulator.
A general model of the sensorimotor system. Notice its hierarchical structure, functional ...
The 10 Steps to Better Test-Taking