Question: Pooling Repeat Exercise 15 IQ and Lead Exposure by assuming that the two population standard deviations are equal, so s1 = s2. Use the appropriate

Pooling Repeat Exercise 15 “IQ and Lead Exposure” by assuming that the two population standard deviations are equal, so s1 = s2. Use the appropriate method from Part 2 of this section.

Does pooling the standard deviations yield results showing greater significance?

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