Mathematics, 24.03.2020 21:28 lance31

Seams personal advertises on its website that 95% of customers' orders are received within four working days. they performed an audit from a random sample of 500 of the 6000 orders received that month and it shows 470 of orders where received on time.

Part A) Can we use normal approximation? explain.

Part B ) if seams personal customers really receive 95% of their orders within four working days, what is the probability that the proportion in the random sample of 500 orders is the same as the proportion found in the audit sample or less?

(thank you anyone who responds or attempts to )

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