Answered: For a statistics assignment Amanda…

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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Question

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.

	Under $30	$30-$60	Over $60
Alcohol was purchased	23	58	47
No alcohol was purchased	37	65	41

a) How many total tables did Amanda observe/record data for?

b) What proportion of the tables had bills over $60?

c) What proportion of the tables had alcohol as part of the purchase/bill?

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

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

f) What proportion of the tables had $30-$60 bills AND had alcohol?

Expert Solution

Step 1

Since you have posted a question with multiple sub-parts, we will solve first three subparts for you. To get remaining sub-part solved please repost the complete question and mention the sub-parts to be solved.

The row and column totals of the given table can be represented as follows: