Apple weights have μ = 150 g and σ = 20 g. A random sample of n = 25 apples is taken.
Find the approximate probability that x̄ exceeds 156 grams.
- A
0.5000
- Bcheck_circle
0.0668
- C
0.3821
- D
0.1587
Explanation
σ_x̄ = 20/√25 = 4. z = (156−150)/4 = 1.5. P(Z > 1.5) ≈ 0.0668.