Answered: A vending machine company wants to…

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

A vending machine company wants to check three of its machines to determine if they are properly dispensing 12 ounces of coffee. Test by using α=0.05. Their data is given below.

Machine A	Machine B	Machine C
11.8	11.7	12.2
12.1	11.9	12.1
12.0	11.7	12.0
11.9	11.8	11.9
12.1	12.0	12.2

Group of answer choices

There is sufficient evidence to reject the claim that the proportions are equal because the p-value 0.0255 < 0.05

There is insufficient evidence to conclude the claim that the proportions are equal because the p-value 0.0255 < 0.05

There is insufficient evidence to reject the claim that the proportions are equal because the p-value 0.0255 < 0.05

There is sufficient evidence to conclude the claim that the proportions are equal because the p-value 0.0255 < 0.05

Expert Solution

Step 1

Null Hypothesis:

H0: The three proportions are equal.

Alternative Hypothesis:

H1: At least two proportions are different.

Excel Procedure:

Enter the data for Machine A, Machine B and Machine C in Excel sheet>Go to Data Menu>Click on Data Analysis> ‘Anova: single factor’ and click on ‘OK’>Select the data under ‘input range’>Click on ‘OK’.

Excel Output:

From the output, the p value is 0.0255.

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