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A random sample of 50 students sent a mean of 38 text messages in a day, with a standard deviation of 12. Using the
A random sample of 50 students sent a mean of 38 text messages in a day, with a standard deviation of 12. Using the table below, find the 90% confidence interval. 35.21 to 40.79 35.67 to 41.33 33.63 to 42.37 Confidence Level(%) z-value 90 1.645 95 1.960 99 2.576
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General Chemistry
Authors: John McMurry, Robert Fay
2nd Edition
321809262, 978-0321809261
