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A research is conducted on the number of times Thais and Chinese who live alone buy...

A research is conducted on the number of times Thais and Chinese who live alone buy Alcoholic drinks in a month. Assume that the distributions follow the normal probability distribution and the population standard deviations are equal. The information is summarized below.

Statistic Thais Chinese
Sample mean 24.07 21.55
Sample standard deviation 5.70 4.64
Sample size 36 39

At the 0.01 significance level, is there a difference in the mean number of times Thais and Chinese order alcoholic drinks in a month?

Math   Statistics-And-Probability   
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