A researcher wanted to know if participants would be more or less likely to shoc

Question

A researcher wanted to know if participants would be more or less likely to shock another individual if they were on a committee to decide or if they had to decide solitarily. The investigator randomly assigned 6 people to a group to decide in a committee and 6 people to decide solitarily. Compliance scores are given below. Do the 6 steps to inferential statistics to test the researchers question. >>>>>>> What are the hypotheses?

You can copy and paste this data into excel

What is your critical t value?

- 2.228 only

Compliance scores are given below. (You can copy and paste into Excel) What is your observed t value?

0.54

What decision and interpretation did you make for the research above?

Fail to Reject Null; compliance scores did differ for solitary individuals versus those in committee

Fail to Reject Null; compliance scores did NOT differ for solitary individuals versus those in committee

A researcher wanted to know if an anti-smoking video reduced smoking rates. The video has been extensively designed to reduce smoking using techniques proven in previous research to lower smoking rates. The mean daily consumption rate for 8 people was recorded before and after watching the video. The data are below. Do the 6 steps to inferential statistics to test the researchers question. >>>>What are the statistical hypotheses?

Committee Solitary 2 3 5 8 20 7 15 10 4 14 10 0

Explanation / Answer

Ho: Mu Committee = Mu Solitary
Ha: Mu Committee Mu Solitary

+ or - 2.228

H0: 1 - 2 = 0 i.e. (1 = 2)

H1: 1 - 2 0 i.e. (1 2)

            

Assuming population variances are equal, we would have to calculate pooled-variance t-Test

Sp^2= (n1-1)S1^2+(n2-1)S2^2/(n1-1)+(n2-1)

         = (6-1)*7.03^2+(6-1)*4.98^2/5+5

         =37.13

tSTAT=(X1-X2)-(µ1-µ2)/Sp^2(1/n1+1/n2)

       =(9.33-7)-0/37.13(1/6+1/6)

       =2.33/3.518

       =0.6632

tCRIT is +/- 2.228 and hence cannot reject the null hypothesis

Fail to Reject Null; compliance scores did NOT differ for solitary individuals versus those in committee

Committee Solitary 2 3 5 8 20 7 15 10 4 14 10 0 9.333333333 7 Mean 7.033254344 4.979959839 Std Dev

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