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# The mid-term test of a certain module has a high (30%) failure rate. The instructor of the module conducted a few special sessions for the entire...

The mid-term test of a certain module has a high (30%) failure rate. The instructor of the module conducted a few special sessions for the entire class after the test. He then randomly selected ten students to sit for another test (with similar scope and level of difficulty). Nine of these students passed the second test. To determine whether the special sessions are effective (in helping students to pass the test), the instructor carried out a hypothesis test.

how do i calculate the p-value? (with the workings cause i would like to see how prob for each case is calculated)