Question
The NAEP (National Assessment of Educational Progress) includes a short test of quantitative skills, covering basic arithmetic and the ability to apply it. Suppose a
The NAEP (National Assessment of Educational Progress) includes a short test of quantitative skills,
covering basic arithmetic and the ability to apply it. Suppose a random sample of 60 young adult men are
taken from a large population. (Assume = 60)
a) Describe the shape of the sampling distribution of x . Justify your answer.
b) If the mean of the sample is 265, what is a 90% confidence interval?
c) If a 95% confidence interval is 256.82 to 287.18, what is the mean of the sample?
d) What does 95% confidence mean?
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Quantitative Analysis For Management
Authors: Barry Render, Ralph M. Stair, Michael E. Hanna
11th Edition
9780132997621, 132149117, 132997622, 978-0132149112
