Refer to Data Set 4

"Births" and use the "lengths of stay" for boys and girls. A length of stay is the number of days the child remained in the hospital. Test the claim boys and girls have the same mean length of stay.

Use the indicated Data Sets in Appendix B. The complete data sets can be found at www.TriolaStats.com. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal.

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