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For a statistics assignment Amanda collected data on restaurant bills for tables. She categorized the price into 3 categories and also recorded whether or not alcohol was purchased.  The results are shown in the table below.

For a statistics assignment Amanda collected data on restaurant bills for tables. She categorized the price into 3 categories and also recorded whether or not alcohol was purchased.  The results are shown in the table below.

MATLAB: An Introduction with Applications
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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  1. For a statistics assignment Amanda collected data on restaurant bills for tables. She categorized the price into 3 categories and also recorded whether or not alcohol was purchased.  The results are shown in the table below.                                                                                                                                                                  [ 1 ea]

 

 

Under $30

$30-$60

Over $60

Alcohol was purchased

23

58

47

No alcohol was purchased

37

65

41

 

 

 

 

  1. How many total tables did Amanda observe/record data for?

 

 

  1. What proportion of the tables had bills over $60?

 

 

  1. What proportion of the tables had alcohol as part of the purchase/bill?

 

 

 

  1. Of the tables where alcohol was purchased, what proportion had bills over $60?

 

 

  1. Of the tables with bills under $30, what proportion did NOT purchase any alcohol?

 

 

  1. What proportion of the tables had $30-$60 bills AND had alcohol?
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