A five-star restaurant has the business objective of improving customer waiting time during the noon-to-1 p.m. lunch period. The manager decides to compare the waiting time between the restaurant's...


A five-star restaurant has the business objective of improving customer waiting time during the noon-to-1 p.m. lunch period. The manager decides to compare the waiting time between the restaurant's two locations. A random sample of 15 customers was selected from Location 1, and another random sample of 15 customers was selected from location 2 on the same day. The waiting times collected from both samples are stored in the following table.








































































Location 1




Location 2



4.21



9.66



5.55



5.90



3.02



8.02



5.13



5.79



4.77



8.73



2.34



8.01



3.54



8.35



3.20



10.49



4.50



6.68



6.10



5.64



0.38



4.08



5.12



6.17



6.46



9.91



6.19



5.47



3.79



3.82






  1. At a 0.05 level of significance, is there evidence of a difference in the means waiting time between the two locations?




  2. Determine the p-value in (a) and interpret its meaning.




  3. What assumption about the population distribution of each location is necessary in (a)? Is the assumption valid for these





Jun 03, 2022
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