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Question 1)
The MacBurger restaurant has an administrative policy that the serving time for their drive through customers is 8 minutes. However, the new manager made some changes (treatment) in an effort to improve the serving time. The manager wants to know if the changes were successful using a 0.05 level of significance. A sample of 64 patrons revealed a mean of 8.5 minutes with a standard deviation of 2.64. What is your conclusion based on this data?
Question 2)
The broker for ABC Real Estate recently noticed that male agents were selling lesser expensive homes than females. A sample of 49 homes sold by males, revealed a mean price of $350,000. A similar sample of 64 homes sold by females, revealed a mean price of $360,000. The population standard deviation for males is known to be $21,000 and for the females is $24,000. What is your conclusion assuming a 0.05 level of significance?
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