Question
A random sample of 40 students ate at a fast-food restaurant an average of 4.3 times a week with a standard deviation of 2.1.
A random sample of 40 students ate at a fast-food restaurant an average of 4.3 times a week with a standard deviation of 2.1. Using the table below, find the 90% confidence interval. 3.75 to 4.85 O3.65 to 4.95 3.44 to 5.16 O3.80 to 4.80 Confidence Level (%) z-value 90 1.645 95 1.960 99 2.576
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Business Statistics A Decision Making Approach
Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry
9th Edition
013302184X, 978-0133021844
