A study was done using a treatment group and a placebo the results are shown in the table Assume that the two samples are independent Simple

Treatment | Placebo dy was done using a treatment group and a placebo group. The results are shown in the table. Assume LL H2 he two samples are independent simple random samples selected from normally distributed populations, do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a n 25 40 significance level for both parts. X 2.35 2.65 S 0.94 0.58 A. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean