Question: For the given​ data, (a) find the test​ statistic, (b) find the standardized test​ statistic, (c) decide whether the standardized test statistic is in the rejection​ region, and​ (d) decide whether you should reject or fail to reject the null hypothesis. The samples are random and independent.

Claim: μ1<μ2​, α=0.01. Sample​ statistics: \({{\bar{X}}_{1}}\) = 1240, n1=50, \({{\bar{X}}_{2}}\) =1190, n2=70. Population​ statistics: σ1=70 and σ2=120.

​(a) The test statistic for μ1 - μ2 is

(b) The standardized test statistic for μ1 - μ2 is

​(c) Is the standardized test statistic in the rejection​ region?

​(d) Should you reject or fail to reject the null​ hypothesis?

Price: $2.99

Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document