SOLUTION: {{{The program office budgets $30,000 per program review at the contractor�s site. Your concern for �end of year� spending drills is that you have budgeted enough for the reviews (

Question 1014673:
Answer by skippo(9) (Show Source): You can put this solution on YOUR website!
H0: � = 30,000
H1: � > 30,000
α = 0.2
C.V = Z1- α = Z1-0.2 = Z0.8 = 0.84 (table value)
Z =((( Ῡ-�))⁄√n)/σ
Decision rule: Reject H0 if /Zcal/ is greater than /Ztab/, otherwise do not reject.
Ῡ = 32,000
σ = 3,500
� = 30,000
n = 16
Zcal =((( Ῡ-�))⁄√n)/σ
Zcal =(((32000-30000))⁄√16)/3500
Zcal =(((32000-30000))⁄√16)/3500
Zcal =(((2000))⁄4)/3500
Zcal =500/3500
Zcal = 0.143 Ztab = 0.84
Decision: since Ztab > Zcal we retained H0 and conclude that the budgeted amount is 30,000 at 80% level of significance.

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