Limited access

Upgrade to access all content for this subject

A music store owner was curious about the number of customers his store gets per day.

He samples the next $25\text{ days}$ and finds an average of $65.5$ customers with a standard deviation of $11.3$ customers.

Assuming these $25\text{ days}$ represent a random sample of all days, a $95\%$ confidence interval for this data would be

A

$11.3\pm 1.96 \cdot \left(\cfrac{65.5}{25}\right)$

B

$65.5\pm1.96 \cdot \left(\cfrac{11.3}{25}\right)$

C

$65.5\pm1.96 \cdot \left(\cfrac{11.3}{5}\right)$

D

$65.5\pm2.064 \cdot \left(\cfrac{11.3}{5}\right)$

E

$65.5\pm2.06 \cdot \left(\cfrac{11.3}{5}\right)$

Select an assignment template