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In Norway, the distribution of birth weights for full-term infants whose gestational age is 40 weeks...

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Statistics

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.

Answer & Explanation Solved by verified expert
3.8 Ratings (540 Votes)
Solution This is the left tailed test The null and alternative hypothesis is H0    See Answer
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