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caitlinhardin9131
caitlinhardin9131
30.05.2020 • 
Mathematics

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 90% confidence interval for the proportion of all orders that arrive on time is 89%plus or minus5%. What does this mean? Are the conclusions below correct? Explain. a )Between 84% and 94% of all orders arrive on time. b )90% of all random samples of customers will show that 89% of orders arrive on time. c )90% of all random samples of customers will show that 84% to 94% of orders arrive on time. d )The company is 90% sure that between 84% and 94% of the orders placed by the customers in this sample arrived on time. e )On 90% of the days, between 84% and 94% of the orders will arrive on time. a) Choose the correct answer below. A. This statement is correct. B. This statement is not correct. No more than 94% of all orders arrive on time. C. This statement is not correct. At least 84% of all orders arrive on time. D. This statement is not correct. It implies certainty.

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