MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A large retail company conducted a manual inspection of the price scanning at checkout. In particular, they want to know if there is any relationship between scanning error rates and sale pricing practices. Here are the data they obtained
| Regular Price |
Advertised Sale Price |
|
|---|---|---|
| Undercharged | 17 | 5 |
| Overcharged | 10 | 23 |
| Correct price | 147 | 168 |
Test the claim at an α=0.01 significance level.
State the hypotheses (using statistical notation on your own papter, this is not submitted but good practice)
Fill in the
| Regular Price |
Advertised Sale Price |
|
|---|---|---|
| Undercharged | ||
| Overcharged | ||
| Correct price |
Test statistic (round to two decimal digits): χ2=
P-value for this test statistic (round to four decimal digits): p=
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