Human pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days. The shortest 2% of pregnancies result in babies that are considered clinically premature. What number of days of pregnancy or less corresponds to the birth of a premature baby? Are you calculating the top or bottom 2%? Answer So, which percentage needs to be converted to an area? Answer What is the area that you will look for in the table (four decimal places)? Answer What area will you actually use from the table (four decimal places)? Answer What is the z-score associated with that area (two decimal places)? Answer What is the cutoff number of days that corresponds to the shortest 2% of pregnancies? (round to the nearest whole number) Answerdays Are values lower or higher than that value also in the shortest 2%?
Human pregnancies are
Are you calculating the top or bottom 2%?
Answer
So, which percentage needs to be converted to an area?
Answer
What is the area that you will look for in the table (four decimal places)?
Answer
What area will you actually use from the table (four decimal places)?
Answer
What is the z-score associated with that area (two decimal places)?
Answer
What is the cutoff number of days that corresponds to the shortest 2% of pregnancies? (round to the nearest whole number)
Answerdays
Are values lower or higher than that value also in the shortest 2%?
Answer
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