Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither. You may use Figure 7-6 and Table 7-1 in your textbook. Claim about daily rainfall amounts in Boston: ? < 0.20 in. Sample data: n = 52, = 0.10 in., s = 0.25 in. The sample data appear to come from a population with a distribution that is very far from normal, and is known.