Question

A Statistics professor has given five tests. A student scored 70, 75, 65, 80 and 95 respectively in the five tests. The professor decides to determine his grade by randomly selecting a sample of 3 test scores. Construct the sampling distribution for this process.

Answer 1

Thus, the distribution has two parameters, viz. mean and standard deviation. .... z1 = X1-µ/σ = 60-60/5=0 and z2= X2-µ/σ= 70-60-5 = 2.