Mathematics, 07.04.2020 18:31 chels6058
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%plus or minus 2%.
a) What does this mean? Are these conclusions correct? Explain.
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) We are 95% sure that between 82% and 94% of the orders placed by the sampled customers arrived on time.
e) On 95% of the days, between 82% and 94% of the orders will arrive on time.
Answers: 3
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A catalog sales company promises to deliver orders placed on the Internet within 3 days. Follow-up c...
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