Mathematics, 27.08.2019 04:20 nisha87
He number of square feet per house are normally distributed with an unknown population mean and standard deviation. if a random sample of 47 houses is taken to estimate the mean house size, what t-score should be used to find a 80% confidence interval estimate for the population mean?
Answers: 2
is given by :_
, whre df is the degree of freedom and 
is the significance level.
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