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Scenario: On March 28 at 1:30 pm, I randomly selected 10 states and found the number of...

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Statistics

Scenario:

  1. On March 28 at 1:30 pm, I randomly selected 10 states and foundthe number of coronavirus cases in each of them.  Thisgave me an average of 939 cases with a standard deviation of1543.  Assume the number of cases in each state isnormally distributed.  Create a 90% confidence intervalfor the actual number of coronavirus cases in each state.

Question:

3. Using the scenario from question 1, how many states wouldneed to be selected to be 90% confident that the sample mean numberof cases would be within 500 of the actual mean?

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Solution Given that1 Point estimate sample mean 939sample standard deviation s    See Answer
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