A local restaurant is trying to determine if bad weather affects how customers tip. The restaurant typically receives averages a tip of 20% a customer's bill. On one rainy day, the restaurant manager recorded the tips, measured in percentages, from 20 different customers: 18.0 19.1 19.2 18.8 18.4 19.0 18.5 16.1 16.8 14.0 17.0 13.6 17.5 20.0 20.2 18.8 18.0 23.2 18.2 19.4 The mean and standard deviation of this sample are x¯=18.19 and s=2.105 Does the manager have significant evidence that customers tip less than 20% on rainy days? a. Yes, the data is significant at level 0.05 b. No, the data is not significant at level 0.05. c. Not enough information is given to determine if the data is significant.
A local restaurant is trying to determine if bad weather affects how customers tip. The restaurant typically receives averages a tip of 20% a customer's bill. On one rainy day, the restaurant manager recorded the tips, measured in percentages, from 20 different customers: 18.0 19.1 19.2 18.8 18.4 19.0 18.5 16.1 16.8 14.0 17.0 13.6 17.5 20.0 20.2 18.8 18.0 23.2 18.2 19.4 The mean and standard deviation of this sample are x¯=18.19 and s=2.105 Does the manager have significant evidence that customers tip less than 20% on rainy days? a. Yes, the data is significant at level 0.05 b. No, the data is not significant at level 0.05. c. Not enough information is given to determine if the data is significant.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A local restaurant is trying to determine if bad weather affects how customers tip. The restaurant typically receives averages a tip of 20% a customer's bill. On one rainy day, the restaurant manager recorded the tips, measured in percentages, from 20 different customers:
18.0 19.1 19.2 18.8 18.4 19.0 18.5 16.1 16.8 14.0
17.0 13.6 17.5 20.0 20.2 18.8 18.0 23.2 18.2 19.4
The mean and standard deviation of this sample are x¯=18.19 and s=2.105
Does the manager have significant evidence that customers tip less than 20% on rainy days?
a. Yes, the data is significant at level 0.05
b. No, the data is not significant at level 0.05.
c. Not enough information is given to determine if the data is significant.
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