Suppose That an Automobile Manufacturer Designed a Radically New Lightweight

Multiple Choice

Suppose that an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline to use. The four grades are: below regular, regular, premium, and super premium. The test car made three trial runs on the test track using each of the four grades. Is there a difference in the performance between the four grades of gas? Using the printout given by Excel, what to you conclude?

A) Since the calculated F-value is smaller than the F-critical value, there is a difference in the performance of these four grades of gas.
B) Since the calculated F-value is smaller than the F-critical value, there is no significant difference in the performance of these four grades of gas.
C) Since the calculated F-value is larger than the F-critical value, there is no significant difference in the performance in the four grades of gas.
D) There is no significant difference in the performance of these four grades of gas as indicated by the calculated F-value being smaller than the F-critical value, and the P-value is large at 0.899, there is an 89% chance of these results happening.