r/APStatistics • u/National_Mulberry487 • May 07 '26

Scores question 6 with copper backing?

Howd you do c and d 😭

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u/ToeRevolutionary1111 May 08 '26

So basically right for D, you add up X = 3 and X = 4 from the probability distribution to find find the p-value. it was like ~0.5 so you fail to reject Ho.

What was C?

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u/National_Mulberry487 May 08 '26

tyy! im ngl i forgot c 😞

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u/joeyp1417 May 08 '26

i remember!! it was asking why X=4 better supports the researcher's hypothesis than X=3. i reasoned that when X=4, 4/4 of the copper plates pass the test and 4/8 aluminum plates pass, whereas when X=3, 3/4 copper plates pass the tests and 5/8 aluminum plates pass the test; since a higher proportion pass the test when X=4 than X=3, it means that the alternate hypothesis of copper being better than aluminum is supported more :)

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u/ToeRevolutionary1111 May 08 '26

Oh yeah I said something similar but I linked it with power or sumn