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A researcher wants to test whether smoking and drinking alcohol are independent, at of 5%. She took a random sample of adults and calculated the
A researcher wants to test whether smoking and drinking alcohol are independent, at of 5%. She took a random sample of adults and calculated the following standardized residuals.
Drink's alcohol | Smoker | |
Yes | No | |
Yes | 3.79 | 0.41 |
No | 1.07 | 0.69 |
Using this table, which of these values shows the least relative difference between the observed and expected cell frequencies?
Please give your answer correctly rounded to two decimal places.
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