2. In a survey of 25 company management staff taken as a sample. They found that they...
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2. In a survey of 25 company management staff taken as a sample. They found that they worked 5 hours a day on average, with a standard deviation of 1.5 hours. Make an interval estimate with a 95% confidence level of the average daily working hours of the company management staff in the survey area. Assume that the population distribution of hours worked follows a normal distribution.
Related Book For
Elementary Statistics Picturing the World
ISBN: 978-0321911216
6th edition
Authors: Ron Larson, Betsy Farber
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