The test scores on a 100-point test were recorded for 20 students: a. Can you reasonably assume
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a. Can you reasonably assume that these test scores have been selected from a normal population? Use a stem and leaf plot to justify your answer.
b. Calculate the mean and standard deviation of the scores.
c. If these students can be considered a random sample from the population of all students, find a 95% confidence interval for the average test score in the population.
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Related Book For
Introduction To Probability And Statistics
ISBN: 9781133103752
14th Edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
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