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a researcher conducts a hypothesis test to evaluate the effect of the treatment that is expected...

a researcher conducts a hypothesis test to evaluate the effect of the treatment that is expected to increases scores. the hypothesis test produces a z-score of z= 2.75. if the researcher is using a one tailed test, what is the correct statistical decision?

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Answer #1

this is a righ tailed test (one tailed)

tset statistc (z) = 2.75

p value is:-

[ using standrad normal table]

p value = 0.003 <0.05 (alpha)

so, we reject the null hypothesis and conclude that there is sufficient evidence to claim that the treatment is expected to increases scores.

***in case of doubt, comment below. And if u liked the solution, please like.

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