# Question

Assume that you have a sample of n1 = 8, with the sample mean X1 = 42, and a sample standard deviation σ1 = 4, and you have an independent sample of n2 = 15 from another population with a sample mean of X-bar2 = 34 and a sample standard deviation σ2 = 5.

a. What is the value of the pooled- variance tSTAT test statistic for testing H0: μ1 = μ2?

b. In finding the critical value, how many degrees of freedom are there?

c. Using the level of significance α = 0.01, what is the critical value for a one- tail test of the hypothesis H0: μ1 < μ2 against the alternative, H1: μ1 > μ2?

d. What is your statistical decision?

a. What is the value of the pooled- variance tSTAT test statistic for testing H0: μ1 = μ2?

b. In finding the critical value, how many degrees of freedom are there?

c. Using the level of significance α = 0.01, what is the critical value for a one- tail test of the hypothesis H0: μ1 < μ2 against the alternative, H1: μ1 > μ2?

d. What is your statistical decision?

## Answer to relevant Questions

Nine experts rated two brands of Colombian coffee in a taste testing experiment. A rating on a 7 point scale (1 = extremely unpleasing, 7 = extremely pleasing) is given for each of four characteristics: taste, aroma, ...To assess the effectiveness of a cola video ad, a random sample of 38 individuals from a target audience was selected to participate in a copy test. Participants viewed two ads, one of which was the ad being tested. ...The consumer research firm Scarborough analyzed the 10% of American adults that are either “ Superbanked” or “ Unbanked.” Superbanked consumers are defined as U. S. adults who live in a household that has multiple ...Referring to Problem 10.2, construct a 95% confidence interval estimate of the population mean difference between μ1 and μ2. You are working with the same experiment as in Problem 10.51. a. If SSA = 60 and SST = 210, what is SSW? b. What is MSA? c. What is MSW? d. What is the value of FSTAT?Post your question

0