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20 15 high school dual-mode mathematics
I found your topic and uploaded it to you. I also hope you can get the correct answer as soon as possible:

On the other hand, the probability that the statistic X2 is less than 6.635 is lower than 1%, so the answer is B, but I really don't remember how to calculate the statistic. See if there is a calculation method in your textbook. I hope this helps.