Assume that you reject the null hypothesis of no-difference at a=0.05. This means that if you assume that there is no difference in the population between weather and purchasing behavior, and the probability of getting a sample that deviates as much from the expected values as your sample does is less than 5%, you reject the null. Then, as a statistics expert, you

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
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Author:Carter
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Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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88
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
6.
4
Purchase NỘT Made
4
6.
Total
Using a Chi-squared test, test the null hypothesis that weather and purchasing
behavior are independent against the alternative that they are dependent.
Transcribed Image Text: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 6. 4 Purchase NỘT Made 4 6. Total Using a Chi-squared test, test the null hypothesis that weather and purchasing behavior are independent against the alternative that they are dependent.
Assume that you reject the null hypothesis of no-difference at a=0.05. This means
that if you assume that there is no difference in the population between weather and
purchasing behavior, and the probability of getting a sample that deviates as much
from the expected values as your sample does is less than 5%, you reject the null.
Then, as a statistics expert, you
Reject the null
Fail to reject the null
Wouldn't know what to do
O Would flip a coin to decide
Transcribed Image Text:Assume that you reject the null hypothesis of no-difference at a=0.05. This means that if you assume that there is no difference in the population between weather and purchasing behavior, and the probability of getting a sample that deviates as much from the expected values as your sample does is less than 5%, you reject the null. Then, as a statistics expert, you Reject the null Fail to reject the null Wouldn't know what to do O Would flip a coin to decide
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