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In: Statistics and Probability

A study was conducted to determine whether an expectant mother’s cigarette smoking has any effect on...

A study was conducted to determine whether an expectant mother’s cigarette smoking has any effect on the bone mineral content of her otherwise healthy child. A sample of 24 newborns whose mothers smoked during pregnancy has mean bone mineral content (x_1 ) ̅=0.098 g/cm and s_1=0.026 g/cm; a sample of 38 infants whose mothers did not smoke has mean (x_2 ) ̅=0.095 g/cm, s_2=0.025 g/cm. Assume that the underlying population variances are equal.

  1. Are the two samples of data paired or independent?
  1. State the null and alternative hypotheses of the two-sided test.
  1. Conduct the hypothesis test that you set up in b.

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