Question
A simple random sample of 12 e-readers of a certain type had the following minutes of battery life. 287, 311, 262, 392, 313, 334, 312,
A simple random sample of 12 e-readers of a certain type had the following minutes of battery life.
287, 311, 262, 392, 313, 334, 312, 316, 286, 263, 273, 291
Assume that it is reasonable to believe that the population is approximately normal and the population standard deviation is 60. What is the upper bound of the 95% confidence interval for the battery life for all e-readers of this type
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College Algebra Graphs and Models
Authors: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna
5th edition
ISBN: 321845404, 978-0321791009, 321791002, 978-0321783950, 321783956, 978-0321845405
