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Suppose the test scores of 75 students in a class follows normal distribution with a standard deviation of 3. The sample mean is 68.
Suppose the test scores of 75 students in a class follows normal distribution with a standard deviation of 3. The sample mean is 68. What distribution is used in constructing confidence intervals in this problem? z-distribution What is Maximal Margin of Error (E) at 95% confidence? [ Select] Construct a 95% confidence interval (67.32101,68.67896)
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Elementary Statistics In Social Research Essentials
Authors: Jack A. Levin, James Alan Fox
3rd Edition
0205638007, 978-0205638000
