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The years of education for self-employed individuals is normally distributed with a mean of 10.4 years and a standard deviation of 2.6 years. If
The years of education for self-employed individuals is normally distributed with a mean of 10.4 years and a standard deviation of 2.6 years. If 44 self-employed individuals are polled, what is the probability that the mean years of education of this sample is at most 9.8 years? Round your answer to at least three decimals.
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Cambridge IGCSE And O Level Additional Mathematics
Authors: Val Hanrahan, Jeanette Powell
1st Edition
1510421645, 978-1510421646
