Lab Session:
H0: μ = μ0
Ha: μ ≠ μ0
α(2) = 0.05; (1-β) = 0.95; δ = | μ-μ0 | = 2.0 cm; s2 = 8.44 cm2
Find n to achieve (1-β) = 0.95 for α(2)
= 0.05, δ = 2.0 cm and s2 = 8.44 cm2
Let n = ∞: n ≥ 8.44/22 (1.96+1.645)2 = 2.11*12.996 = 27.42, round up to n=28
n=28: n ≥ 2.11(2.052+1.703)2 = 29.75, round up to n=30
n=30: n ≥ 2.11(2.045+1.699)2 = 29.57, round up to n=30
n=30 repeats itself, so stay with that.