Stats Solutions

(See Solution) Perform each of the following steps: State the hypotheses and identify the claim. Find the critical value(s). Compute the test value. Make the

Question: Perform each of the following steps:

  1. State the hypotheses and identify the claim.
  2. Find the critical value(s).
  3. Compute the test value.
  4. Make the decision.
  5. Summarize the results.

Heights of 9 year old girls. At age 9, the average weight (21.3 kg) and average height (124.5cm) for both boys and girls are exactly the same. A random sample of 9 year olds yielded these results. Estimate the mean difference in height between boys and girls with 95% confidence. Does your interval support the given claim?

Boys Girls

Sample size 60 50

Mean height, cm 123.5 126.2

Population variance 98 120

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


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