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An owner of a local gas station wants to study the average gasoline purchases of her customers. With a sample of 100 purchases, she finds
- An owner of a local gas station wants to study the average gasoline purchases of her customers. With a sample of 100 purchases, she finds s = 5.5 gallons In testing whether the mean is 20, she finds the p-value of 0.38......Your job is to find XBAR -- for simplicity let XBAR be greater than 20. Hint - WORK BACKWARDS!
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Prealgebra
Authors: Marvin L Bittinger, David J Ellenbogen, Barbara L Johnson
7th Edition
032164008X, 9780134347202
