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Emma M.

Intro Stats / AP Statistics

1 month, 3 weeks ago

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State the null and alternative hypotheses. (b) Perform the hypothesis test using critical value (CV) approach at 5% level of significance.

All right? So, uh here uh let in part uh we we state that uh let the past one. Uh this is uh our treatment group, right? This is a treatment, this is treatment group, And the 2nd 1 is control group, right? This will be control group right Now, we will start the metal and alternative hypothesis. Right? So this is the null hypothesis, which is H and our new one is equal to μ two. This is null hypothesis and accept will be alternative hypothesis, right? And this is one as greater than new, too. Right? So, this is alternative hypothesis. This is alternative hypothesis right now, uh this part is easy right now, in part me here, let uh and part B the poor variance. Right? So the pool radiance. This is a piece where this is as one square And one man has won. This is the formula. So it's too square In two minutes, 1 Divided by anyone plus in two minutes to write. And if you put the values here, this will be 7.7167 because we know all these valleys, Paris one and uh and one and two is too right? Uh huh. Now uh e and this is square rule the poor very in square times when we're and one plus one word Plus one, We're into, right? When we're in one plus when we're into right? And if we took the values here, if we put the values here, This will be we know the valleys. And this will be 1.24-3, right? And that is a statistic, which is T. This is X. One Barman A six to bar divided by S. B. This value. Right? So if we put the rails, this will be 3.3 right? And the critic critical The critical value uh which is T010 pipe and degree of Freedom 18 18. This is 1.73 pour one night. So since a hair, since since the R. T is equal to 3.3 which is greater than 1.73. Poor one. So we reject the null hypothesis. Right? So we reject the null hypothesis right now and we and we conclude that uh there is a sufficient evidence to enter their the mean memory score uh part treatment group is higher than that up control group. Right? So there is a sufficient evidence to conclude that that means the main memory score. Memory score is greater than the part that up a control group, Right? Control group. This is up the treatment group. Their treatment group is greater than controlled, right?

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