The following information is given concerning the ACT scores of high school seniors from two local schools. 
Develop a 98% confidence interval estimate for the difference between the two population means.Assume the two populations are normally distributed.
Definitions:
Karyotype
The number and visual appearance of the chromosomes in the cell nuclei of an organism or species.
Chorionic Villus Sampling
A prenatal test in which a sample of chorionic villi from the placenta is taken to test for genetic abnormalities in the fetus.
Pedigree
A chart or diagram showing the genetic traits or conditions of individuals across generations within a family, used in genetics to track inheritance.
Syndactyly
A congenital condition where two or more digits are fused together.
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