In 2012 the General Social Survey asked 840
adults how many years of education they had....
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Statistics
In 2012 the General Social Survey asked 840adults how many years of education they had. The sample mean was8.11 years with a standard deviation of 8.91 years.
An 80% interval for the mean number of years of education. Roundthe answers to two decimal places.
An 80% confidence interval for the mean number of years ofeducation is _< μ <_.
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Solution Given thatPoint estimate sample mean 811sample standard
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