Statistics Solutions

(See Solution) Two independent samples have been selected, 100 observations from population 1 and 80 observations from population 2. Sample means and sample

Question: Two independent samples have been selected, 100 observations from population 1 and 80 observations from population 2. Sample means and sample variance were obtained:

\[{{\bar{X}}_{1}}=70,{{\bar{X}}_{2}}=63,s_{1}^{2}=100,s_{2}^{2}=67\]
  1. Construct a 95% confidence interval for \({{\mu }_{1}}-{{\mu }_{2}}\).
  2. Test whether their population means are different at \(\alpha =0.01\).

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


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