Question # 3 Perform the following hypothesis test on the paired data below : Ho: Ha = O ( Please recall that Ha is read ~ and also known as ~ Mu - sub -d) HA ! Ha* O Test at a = 0. 05 Before| 30 72 97 57 57 8.9 92 After 57 5.9 61 68 98 62 67 71 68 90 90 a ) Is this an upper tail, lower tail , or two - tail test ? ( 5 points ) 6 ) Are we testing means or proportions ? ( 5 points ) C ) State the rule of rejection ( in terms of p - value and level of significance ) ( 5 points ) `) Find the p-value ( 5 points) @ ) Should you reject or not reject HO ? ( 5 points ) $) Do the data provide sufficient evidence to suggest the After scores are indeed higher ? Why or why not ? ( 5 points ) Note : Because the above is a two - tail test , rejection of HO alone is not a sufficient reason . Hint . What Else did you observe among the sample results ?"