A Sample of N = 4 Scores Is Selected from a Normal

Multiple Choice

A sample of n = 4 scores is selected from a normal population with a mean of µ = 50 and a standard deviation of σ = 20.What is the probability of obtaining a sample mean greater than M = 48?

A) p = 0.6554
B) p = 0.3446
C) p = 0.5793
D) p = 0.4207