The true proportion of customers who refuse to go back

Reference no: EM1319134

Minimum sample size to estimate the proportion.

Just, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur. In spite of the response from the restaurant chain, many consumers refused to visit the restaurant for some time after the event. A survey was conducted three months after the food poisoning occurred with a sample of 319 patrons contacted. Of the 319 contacted, 29 indicated that they would not go back to the restaurant because of the potential for food poisoning. What sample size would be needed in order to be 99% confident that the sample proportion is within .02 of π, the true proportion of customers who refuse to go back to the restaurant?

A. 500
B. 638
C. 1000
D. 1,373
E. 1,777

Reference no: EM1319134

Questions Cloud

The proportion of all adults who feel the identical way : In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to drink. Construct the 90% confidence interval for the proportion of all adults who feel the identical way.

Level of significance-integers not generated uniformly : At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly?

Write down the equation : Write down the equation

Assume okuns law holds also a one percent : Assume Okun's law holds also a one percent (%)age point rise in the unemployment rate reduces real output by 2% of full-employment output. The expectations-augmented Phillips curve.

The true proportion of customers who refuse to go back : Just, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur. In spite of the response from the restaurant chain, man..

Find out the 99% confidence interval for population mean : The coffee/soup machine at the local bus station is supposed to fill cups with 6 ounces of soup. Ten cups of soup are brought with results of a mean of 5.93 ounces and a standard deviation of 0.13 ounces. Construct a 99% confidence interval for th..

Inelastic or unit elastic at the profit-maximizing price : Illustrate what price-quantity comb I country maximizes your firm's profits. Is Demand elastic, inelastic or unit elastic at the profit-maximizing price-quantity combination.

Determining machining costs by activity-based costing : Hagar Co. computed an overhead rate for machining costs ($1,500,000) of $15 per machine hour. Machining costs are driven by machine hours. If computed based on direct labour hours, the overhead rate for machining costs would be $30 per direct labo..

Apply the mathematical model to solve problems : Apply the mathematical model to solve problems

User Account

All Pages