Question: Low birth weight ( <5.5lbs) is an important marker of maternal health and is associated with neonatal mortality and adverse developmental outcomes. Hospital administrators at

Low birth weight (<5.5lbs) is an important marker of maternal health and is associated with neonatal mortality and adverse developmental outcomes. Hospital administrators at JJK Memorial Hospital believe that the babies born at their hospital have a mean birthweight of 5.5 lbs. A doctor believes the true mean to be different. He examined the birth records of 1,000 newborns and found the mean birthweight to be 6 lbs with a standard deviation of 1.26. Using a 0.05 significance level, test the claim that the mean birth weight is different from 5.5lbs among babies born at JJK Memorial Hospital.

a. Reject the null hypothesis due to sufficient evidence and conclude the mean birthweight of babies born at JJK Memorial Hospital is different from 5.5 lbs.

b. Reject the null hypothesis due to sufficient evidence and conclude the mean birthweight of babies born at JJK Memorial Hospital is 5.5 lbs.

c. Accept the null hypothesis due to sufficient evidence and conclude the mean birthweight of babies born at JJK Memorial Hospital is different from 5.5 lbs.

d. Fail to reject the null hypothesis due to insufficient evidence and conclude the mean birthweight of babies born at JJK Memorial Hospital is 5.5 lbs.

e. Fail to reject the null hypothesis due to sufficient insufficient evidence and conclude the mean birthweight of babies born at JJK Memorial Hospital is different from 5.5 lbs.

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