In Norway, the distribution of birth weights for full-terminfants whose gestational age is 40 weeks is approximately normalwith mean μ= 3500 grams. We wish to determine if the birth weightsof full-term babies whose mothers smoked throughout pregnancy isless than those of non-smoking mothers. A sample of 17 babies bornto mothers who smoked is collected. The sample mean is 3297 gramsand the sample standard deviation is 430 grams.
Test your hypothesis at the α = 0.05 level and explainwhat the results mean.
