Question 2 (1 point) You are interested in whether there is a relationship betwe

Question

Question 2 (1 point) You are interested in whether there is a relationship between participating a Residential Substance Abuse Treatment (RSAT) program reduces substance use in prisoners once they are released from prison. You hypothesize that after participating in the RSAT program prisoners will report fewer days of substance use in a month. Using the Output, Can you reject your null if testing at the .05 level of significance? Paired Samples Statistics Std. Deviation Mean 18.5000 26 26 7.31710 6.74651 Std. Error Mean 1.43500 1.32310 SubUseBefore Pair 1 SubUseAfter 6.6538 Paired Samples Test Paired Differences t dfSig. 2 tailed) Std. Deviation Mean Mean Std. Error | 99% Confidence Interval of the Difference LowerUpper Pair SubUse before 11.84615 7.25916 1.423647.8778515.81445 020 SubUseAfter Yes, .05 is greater than (.020/2-.010) Yes,.05 is greater than .020 No, .05 is greater than.020 Yes, .05 is less than (.020/2 .010)

Explanation / Answer

In the majority of analyses, an alpha of 0.05 is used as the cutoff for significance. If the p-value is less than 0.05, we reject the null hypothesis that there's no difference between the means and conclude that a significant difference does exist.

Here,

p value = 0.02 < 0.05

Thus, null is rejected

B option

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