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The Following Frequency Distribution Shows the Distribution of Delivery Times

Question 55

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The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. The following frequency distribution shows the distribution of delivery times (in days) for swimstuff.com customer orders during the last month. For 300 observations, our rule-of-thumb for number of classes would indicate 9 classes. In this case, what is the class interval and why would it be reasonable to use that class interval and only 6 classes? For 300 observations, our rule-of-thumb for number of classes would indicate 9 classes. In this case, what is the class interval and why would it be reasonable to use that class interval and only 6 classes?

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The class interval is 1 day. The class i...

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