A population has μ = 150 grams and σ = 20 grams. Samples of size n = 25 are taken.
What is the standard deviation of the sampling distribution of x̄?
- A
20 grams
- B
5 grams
- Ccheck_circle
4 grams
- D
0.8 grams
Explanation
σ_x̄ = σ/√n = 20/√25 = 20/5 = 4 grams.