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Exercise 30

Avg difficulty 2.5

Scores on a certain quiz are normally distributed. In sample of 25 students the mean score was 14 points with a standard error estimate of 2 points. Calculate the margin of error and the 95% confidence intervals. Interpret Confidence interval.

Lee et al., Math in Society, §3.5 The Normal Distribution, Exercise 30

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Adapted from Math in Society © 2018–2024 Portland Community College Math Instructors. Licensed under CC BY-SA 4.0. Source: Math in Society. Imported at revision 68ee43c.