A local college cafeteria has a self-service soft ice cream machine. The cafeteria provides bowls that can
Question:
a. Let µ1 and µ2 be the population means of ice cream amounts dispensed by all male and all female students at this college, respectively. What is the point estimate of µ1 – µ2?
b. Construct a 95% confidence interval for µ1 – µ2.
c. Using a 1% significance level, can you conclude that the average amount of ice cream dispensed by all male college students is larger than the average amount dispensed by all female college students? Use both approaches to make this test.
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