Basic Statistics Null Hypothesis

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-assurancedepartment found in a sample of 50 customers at the Warren Road MacBurger that the mean waiting time was 2.75 minutes. At the .05 significance level, can weconclude that the mean waiting time is less than 3 minutes?

a. Compute the value of the test statistic
b. What is your decision regarding H0?

c. What is the p-value? interpret it.

Please help me out by explaining each step so I can solve other problems like this. I just don't understand my assignment at all this week.


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