The Makers of Furnace Filters Recently Conducted a Test to Determine

question 9

True/False

The makers of furnace filters recently conducted a test to determine whether the median number of particulates that would pass through their four leading filters was the same. A random sample of 6 of each type of filter was used with the following data being recorded: If the managers are unwilling to assume that the populations are normally distributed, the appropriate test in this case would be the Mann-Whitney U test.

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Definitions:

Test Statistic

A statistic derived from the data of a sample during a hypothesis test that determines if the null hypothesis should be discarded.

Value Of F

In the context of statistical testing, it refers to the calculated statistic used in the F-test to determine whether two population variances are equal.

Regression Equation

A mathematical formula that describes the relationship between a dependent variable and one or more independent variables.

Variation

The extent to which data points in a statistical distribution or dataset differ from each other and from their average value.