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According to a survey, a high school girls average 100 text messages daily (The Boston Globe, April 21, 2010). Assume the population standard deviation is
According to a survey, a high school girls average 100 text messages daily (The Boston Globe, April 21, 2010). Assume the population standard deviation is 20 text messages. Suppose a random sample of 50 high school girls is taken.What is the probability that the sample mean is between 95 and 105
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International Marketing And Export Management
Authors: Gerald Albaum , Alexander Josiassen , Edwin Duerr
8th Edition
1292016922, 978-1292016924
