Question

A nursery sells trees of different types and heights. these trees average 60 inches in height with a standard deviation of 16 inches. suppose that 75 pine trees are sold for planting at city hall. what is the standard deviation for the sample mean?

Answer 1

Solution: We are given:

μ=60,σ=16,n=75

Now the standard deviation of the sample mean = σ/sqrt(n)=16/sqrt(75)=1.8475

Therefore the standard deviation for the sample mean is 1.8475