A Recent Study Used Umbilical Cord Blood to Test for 25

question 34

Multiple Choice

A recent study used umbilical cord blood to test for 25 hydroxyvitamin D,which is an indicator of vitamin D status of the baby.It was reported that 65% of babies tested were deficient in vitamin D in spite of the fact that the mothers consumed vitamin D supplements during pregnancy.A researcher in a northern region felt that this percentage was too high for this region because with the reduced hours of sunshine during winter months,pregnant women tended to use higher doses of supplements to compensate.A sample of 125 newborns was tested,and 72 were declared to be deficient in vitamin D.Based on the data from this region,what is the value of the appropriate test statistic?

• A)-1.73
• B)-1.32
• C)-1.96
• D)-1.68
• E)-2.01

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