Three restaurant servers are competing for Employee of the Month. The table below shows the number of customers each server waited on either at curbside pickup or counter service. The employee who waits on the most customers will be the Employee of the Month.   Do the data in the table provide evidence that Server B is responsible for more than  of all the customers at this restaurant? Justify your answer using statistical inference (that is, complete each bullet listed below).     Server A Server B Server C TOTAL Number of Curbside Customers 21 15 15 51 Number of Counter Customers 39 50 17 106 TOTAL 60 65 32 157   Answer each of the bullets below. You may hand write your answer, or type in the space provided.    Write the null and alternative hypothesis.   Define the parameters used in the hypothesis. Check to make sure the conditions are met to assume a normal distribution.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Three restaurant servers are competing for Employee of the Month. The table below shows the number of customers each server waited on either at curbside pickup or counter service. The employee who waits on the most customers will be the Employee of the Month.

 

Do the data in the table provide evidence that Server B is responsible for more than  of all the customers at this restaurant? Justify your answer using statistical inference (that is, complete each bullet listed below).

 

  Server A Server B Server C TOTAL
Number of Curbside Customers 21 15 15 51
Number of Counter Customers 39 50 17 106
TOTAL 60 65 32 157

 

Answer each of the bullets below. You may hand write your answer, or type in the space provided.

 

  •  Write the null and alternative hypothesis. 
  •  Define the parameters used in the hypothesis.
  • Check to make sure the conditions are met to assume a normal distribution.
  • Write the formula for the test statistic that would be used. Use appropriate notation.
  • Evaluate the formula for the test statistic using the appropriate numerical values from the problem. Show all work as well as providing the final test statistic value.
  • Find the p-value.
  •  State the conclusion of the hypothesis test in the context of this situation.

 

  •  Write the formula to find a confidence interval for the true proportion of customers Server B is responsible for.
  • Build a 90% confidence interval for the true proportion of customers Server B is responsible for.
  •  Interpret the confidence interval in the context of this situation.

 

  • Based on the results of the hypothesis test and confidence interval, will Server B become Employee of the Month (based on number of customers served)?

 

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