What is the average weight for a 9 year old

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At age 9 the average weight (21.3 kg) and the average height (124.5 cm) 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?

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Complete Question:

Heights of 9-Year-Olds At age 9 the average weight (21.3 kg) and the average height (124.5 cm) 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

a.State the hypotheses and identify the claim.


b.Find the critical value(s).


c.Compute the test value.


d.Make the decision.


e.Summarize the results.

Step-by-step explanation:

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