Question: When birth weights were recorded for a simple random sample of 16 male babies born to mothers taking a special vitamin supplement, the sample had

When birth weights were recorded for a simple random sample of 16 male babies born to mothers taking a special vitamin supplement, the sample had a mean of 3.675 kilograms and a standard deviation of 0.657 kilogram (based on data from the New York State Department of Health). Use a 0.05 significance level to test the claim that the mean birth weight for all male babies of mothers given vitamins is different from 3.39 kilograms, which is the mean for the population of all males. Based on these results, does the vitamin supplement appear to have an effect on birth weight?

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