Question

a group of student got the following scores in an achievement test 9,12,15,18,21 and 24. consider samples of size 3 that can be drawn from this population.

Answer 1

We consider samples of two types: samples without replacement and samples with replacement.

1.The list of samples without replacement is presented below:

2.We take into account the order of numbers for samples with replacement. I.e., $(9,9,12)$ and $(9,12,9)$ are two different samples. The table of samples with replacement is presented below: