Exhibit 10-3 An Engineer Collected Data from Three Different Types of Power

Multiple Choice

Exhibit 10-3
An engineer collected data from three different types of power drills.Specifically, the engineer collected data on how long (in minutes) each type of drill would run continuously after a full battery recharge.Each drill was charged and run continuously 15 times.The reported data are contained in the following table.The engineer analyzed the data using one-way ANOVA in Excel and the results from Excel are also given below.


-Refer to Exhibit 10-3.The one-way ANOVA was used to determine if the population mean continuous run times are equal (the null hypothesis) for all three types of drills,or if all pairs of population means are not equal (the alternative hypothesis) .Which decisions could the manager make?

A) Reject the null hypothesis using a 5% significance level, and reject the null hypothesis using a 1% significance level.
B) Reject the null hypothesis using a 5% significance level, but do not reject the null hypothesis using a 1% significance level.
C) Reject the null hypothesis using a 1% significance level, but do not reject the null hypothesis using a 5% significance level.
D) Do not reject the null hypothesis using a 5% significance level, and do not reject the null hypothesis using a 1% significance level.