Question: The MacBurger restaurant chain claims that the mean waiting time of customers is 3 minutes with a population standard deviation of 1 minute. The quality-assurance department found in a sample of 50 customers at the Warren Road MacBurger that the mean waiting time was 3.05 minutes. At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?

a) Is this a one-tailed or two-tailed test? Please draw and label the normal curve. (6 points)

b) Please state in words and symbols the null and alternative hypotheses. (4 points)

c) Please state what method or technique you used to analyze the data to answer the question of whether or not the mean waiting time is less than 3 minutes. (3 points)

d) Can you reject the null hypothesis? (2 points)