Statistics Solutions

[Solution Library] In random samples of 25 from each of two normal populations, we found the following statistics: x̄ 1 = 524 s 1 = 129 x̄ 2 = 469 s 2 = 141 Estimate

Question: In random samples of 25 from each of two normal populations, we found the following statistics:

x̄ 1 = 524 s 1 = 129
x̄ 2 = 469 s 2 = 141
  1. Estimate the difference between the two population means with 95% confidence.
  2. Repeat part (a) increasing the standard deviations to s 1 = 255 and s 2 = 260.
  3. Describe what happens when the sample standard deviations get larger.
  4. Repeat part (a) with samples of size 100.
  5. Discuss the effects of increasing the sample size.

Price: $2.99
Solution: The downloadable solution consists of 3 pages
Deliverable: Word Document


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