Answer to Question #217127 in Statistics and Probability for JITENDAR SINGH

Question

discount sound has 260 retail

Answer 1

We know that the margin of the error $=z_{\alpha/2}\frac{(\sigma)}{\sqrt{n}}$

$=\frac{1.96\times 4500}{\sqrt{36}}$

$=1.96\times 750$

$=1470$

Interval estimate of $\mu =\$31000\pm 1470$

Hence, $\$ 29630$ to the $\$32570$