Does pollution affect amount of sleep? 50 people living in a polluted region were randomly selected; there sleep the night before averaged 8.6 hours. In the general population, amount of sleep is normally distributed with μ = 8 and σ = 1.2.
8. Restate question as a research hypothesis and a null hypothesis about the populations.
Population 1:
Population 2:
Research hypothesis:
Null hypothesis:
9. Determine the characteristics of the comparison distribution.
10. Determine the cutoff sample score (critical value) on the comparison distribution at which the null hypothesis should be rejected at a p. < .05.
