ScenariosHoPart1N1.xlsx

Sheet1

Bag of Seeds Scenario
Ho μ 50 Ha μ < 50
Reject Accept
a = 0.05
-1.729
t t why, because n = 20, ratio data
FDR Reject Ho if t < crv = - 1.729
S = (49.13 - 50) = -0.87 = -2.232
1.743 / Ö 20 0.2465
D Since t = - 3.53 < -1.729 , Reject Ho
C The bags are underfilled
R Fix the process so that the bags are filled to capacity = 50 LBS
Absentism Scenario
Ho μ 12 Ha μ < 12
Reject Accept
a = 0.05
-1.645
t z why, because n = 49 weeks, ratio data
FDR Reject Ho if z < crv = - 1.645
S = (9 - 12) = - 3 = -10.5
2 / Ö 49 0.286
D Since z = - 10.5 < -1.645 , Reject Ho
C Flex time worked
R Continue with Flex time
Increase Revenue
Ho μ 75 Ha μ > 75
Accept Reject
a = 0.05
1.711
t t why, because n = 25 weeks, ratio data
FDR Reject Ho if t > crv = 1.711
S = (80 - 75) = 5 = 3.125
8 / Ö 25 1.6
D Since t = 3.125 > 1.711
C Advertising works
R Continue with Advertising

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