Suppose that we will randomly select a sample of four measur
1. Suppose that we will randomly select a sample of four measurements
from a larger population of measurements. The sampling distribution of the
sample mean is the probability distribution of a population. In your own words,
describe the units in this population.
2. Why do we need to take a preliminary sample when
determining the size of the sample needed to make the margin of error of a
confidence interval equal to E?





