Question
Nine hundred (900) high school freshmen
were randomly selected for a national survey.
Among survey participants, the mean grade-
point average (GPA) was 2.7, and the
standard deviation was 0.4. What is the
margin of error, assuming a 95% confidence
level? (round to the nearest
thousandths place)
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Nine hundred (900) high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade- point average (GPA) was 2.7, and the standard deviation was 0.4. What is the margin of error, assuming a 95% confidence level? (round to the nearest thousandths place)

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