Function TestHours(testName As String, sampleCount As Long)
Application.Volatile (True) 'Makes the calculation apply after every change, including changes to test-list hours
Dim testNameRange As Range, setupHourRange As Range, sampleHourRange As Range, samplePerSetupRange As Range
Set testNameRange = Sheets("Test List").Columns(1)
Set setupHourRange = Sheets("Test List").Columns(3)
Set sampleHourRange = Sheets("Test List").Columns(4)
Set samplePerSetupRange = Sheets("Test List").Columns(5)