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The company Jcrew advertises that 95% of its online orders ship within two working days. You select a random sample of 200 of the

The company Jcrew advertises that 95% of its online orders ship within two working days. You select a random sample of 200 of the 10,000 orders received over the past month to audit. The audit reveals that 180 of these orders shipped on time. a. What is the sample proportion of orders shipped on time? b. What are the mean and standard deviation of the sampling distribution of sample proportions?

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