Hypothesis Testing and P-values
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@krescent2 I have the same doubt. I am guessing even t-test would yield towards similar numbers.
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please number your wonderful videos cheers
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why not using the T test?
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Yay! I get it now! My instructor made is SO confusing. This was beautifully simple. Thank you, thank you, thank you!
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@Riou2294 It is stating that the p=0.003 and therefore the null hypothesis should be rejected. if the Z score was more than 0.5, the alternate hypothesis should be rejected. So in affect. 1 in every 300 experiments, the Null hypothesis would be correct.
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Explained in a minute what my professor couldn't convey given hours daily to teach it
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@beer94 it is NOT saying that theres less than .003 chance that the drug works.
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@beer94 It's saying if the null is true, theres a .003 probablility that the rats have a response time as extreme as 1.05.
And the sample of rats that got DRUGGED has a MEAN of 1.05. So it is very likely that the drug affects the response time of the rats.
Therefore, the null hypothesis is REJECTED and the alternative is accepted. "Drug has an effect"
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waait.... why did you reject? if theres less than .003 chance that the drug works, then doesnt that mean that the drug doesnt work??? so you fail to reject that the drug has no effect
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this confused me more... I guess used to going to z table and comparing the z score to the probability... arrgh
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anyone think its bizarre how one guy is teaching every subject on earth
totallykeet 3 months ago 48
OH MY GOD I LOVE YOU Totally understand this now!
usaswim323 1 year ago 26