John Charleston owns a heating oil delivery company that services 1,540 residences. John would like to estimate the number of customers that have oil storage tanks that are less than 100 gallons in capacity. A random sample of 200 customers found that 63 had an oil tank that was less than 100 gallons. The 80% confidence interval to estimate the proportion of customers with oil tanks less than 100 gallons is______ .

Question

Quizplus · Accepted Answer

The Answer of John Charleston owns a heating oil delivery company that services 1,540 residences. John would like to estimate the number of customers that have oil storage tanks that are less than 100 gallons in capacity. A random sample of 200 customers found that 63 had an oil tank that was less than 100 gallons. The 80% confidence interval to estimate the proportion of customers with oil tanks less than 100 gallons is______ .

John Charleston Owns a Heating Oil Delivery Company That Services