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Professor X runs an experiment and obtains a z statistic of 1.96. He then repeats his...

Professor X runs an experiment and obtains a z statistic of 1.96. He then repeats his experiment and obtains a z statistic of 1.30. If the results of the two experiments are independent, what is the total probability that he would obtain z statistics that were at least as large as these in the two experiments combined if the null hypothesis was actually true.

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