Final answer:
The hypothesis of interest to the researcher is that more than 6% of all mice in the population will have spots. To compute the test statistic, we can use a one-sample proportion test.
Step-by-step explanation:
a. The hypothesis of interest to the researcher is that more than 6% of all mice in the population will have spots.
b. To compute the test statistic, we can use a one-sample proportion test. The formula for the test statistic is: z = (p - P0) / sqrt((P0 * (1-P0)) / n), where p is the proportion of mice with spots in the sample (44/580), P0 is the hypothesized proportion (6% or 0.06), and n is the sample size.
Using this formula, we can calculate the test statistic.