Problem regarding the catalog sales

Reference no: EM131008808

Catalog sales

A catalog sales company promises to deliver orders placed on the Internet within 3 days. Follow up calls to a few randomly selected customers show that a 95% confidence interval for the proportion of all orders that arrive on time is 88% ; 6%. What does this mean? Are the conclusions in parts a-e correct? Explain.

a) Between 82% and 94% of all orders arrive on time.

b) 95% of all random samples of customers will show that 88% of orders arrive on time.

c) 95% of all random samples of customers will show that 82% to 94% of orders arrive on time.

d) The company is 95% sure that between 82% and 94% of the orders placed by the customers in this sample arrived on time.

e) On 95% of the days, between 82% and 94% of the orders will arrive on time.

Reference no: EM131008808

Questions Cloud

Problem regarding the sure of getting : Recently, two students made worldwide headlines by spinning a Belgian euro 250 times and getting 140 heads-that's 56%. That makes the 90% confidence interval (51%, 61%). What does this mean? Are the conclusions in parts a-e correct? Explain your a..

How many music players will be bought : How many music players will be bought at a price of $260? Graph the demand function for 0 ≤ x ≤ 400. Find the marginal demand, q'(x). Interpret the meaning of the derivative.

Propose a structure for the compound : Propose a structure for the compound - assign the 1H NMR and 13C NMR spectra for each compound

Define suburban sprawl : Define suburban sprawl and describe how human population growth causes it. List the negative, environmental impacts caused by suburban sprawl

Problem regarding the catalog sales : A catalog sales company promises to deliver orders placed on the Internet within 3 days. Follow up calls to a few randomly selected customers show that a 95% confidence interval for the proportion of all orders that arrive on time is 88% ; 6%. Wha..

Problem regarding the mn ore conditions : Consider each situation described below. Identify the population and the sample, explain what p and p represent, and tell whether the methods of this chapter can be used to create a confidence interval.

Problem regarding the margin of error : A corporate executive reports the re- sults of an employee satisfaction survey, stating that 52% of employees say they are either "satisfied" or "extremely satisfied" with their jobs, and then says "the margin of error is plus or minus 4%." Explai..

Estimate the percentage of businesses : In preparing a report on the economy, we need to estimate the percentage of businesses that plan to hire addi- tional employees in the next 60 days.

Critically evaluate the current policy for the issue : Discuss a significant issue / challenge arising from globalization that has taken place in the last three to six (3-6) months. Critically evaluate the current policy(ies) for the issue / challenge

User Account

All Pages