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  3. the average human gestation time is 266 days from

The average human gestation time is 266 days from conception. A researcher suspects that proper...

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The average human gestation time is 266 days from conception. A researcher suspects that proper nutrition plays an important role and that poor women with inadequate food intake would have shorter gestation times even when given vitamin supplements. A random sample of 20 poor women given vitamin supplements throughout the pregnancy has a mean gestation time fromconception of x? = 256 days.The researcher's alternative hypothesis for the test isHa: ?< 266.Ha: ? <256.Ha: ? = 266.Ha: ? ? 256.

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