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Here are summary statistics for randomly selected weights of newborn? girls: n =191?, x? = 33.2...

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Basic Math

Here are summary statistics for randomly selected weights ofnewborn? girls: n =191?, x? = 33.2 ?hg, s = 6.1 hg. Construct aconfidence interval estimate of the mean. Use a 90?%

confidence level. Are these results very different from theconfidence interval 32.9 hg < ? < 34.3 hg with only 19sample? values, x? = 33.6 ?hg, and s = 1.7 ?hg?

A. What is the confidence interval for thepopulation mean ???

____ hg < ????? < ____ hg (Round to one decimal place as?needed.)

B. Are the results between the two confidenceintervals very? different?

a) Yes, because the confidence interval limits are notsimilar.

b) No, because each confidence interval contains the mean of theother confidence interval.

c) ?No, because the confidence interval limits are similar.

d) Yes, because one confidence interval does not contain themean of the other confidence interval.

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