MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Please answer the question in the picture below with the information provided
Chi-Squared Test
A car dealer suspects that the weather of the day of the test drive has an effect on the
purchasing behavior. The car dealer recorded the observations in a cross-tab.
Sunny Cloudy Rainy Total
Purchase Made
4
Purchase NOT Made
4
Total
Using a Chi-squared test, test the null hypothesis that weather and purchasing
behavior are independent against the alternative that they are dependent.
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Transcribed Image Text:Chi-Squared Test A car dealer suspects that the weather of the day of the test drive has an effect on the purchasing behavior. The car dealer recorded the observations in a cross-tab. Sunny Cloudy Rainy Total Purchase Made 4 Purchase NOT Made 4 Total Using a Chi-squared test, test the null hypothesis that weather and purchasing behavior are independent against the alternative that they are dependent.
What's the probability that if in the true population there is no difference between
weather and purchasing behavior that your actual observations come from such a
population? In other words, the p-value of your test-statistics is
less than 1 percent
between 1 and 2.5 percent
O between 2.5 and 5 percent
More than 5 percent
expand button
Transcribed Image Text:What's the probability that if in the true population there is no difference between weather and purchasing behavior that your actual observations come from such a population? In other words, the p-value of your test-statistics is less than 1 percent between 1 and 2.5 percent O between 2.5 and 5 percent More than 5 percent
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