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You have just recorded the waiting times for a random sample of 50 customers who visited Elmo's Pizza Shop.The following table gives the frequency distribution of waiting times (in minutes)for these customers.
Use the following to answer questions : You have just recorded the waiting times for a random sample of 50 customers who visited Elmo's Pizza Shop.The following table gives the frequency distribution of waiting times (in minutes)for these customers. -The variance of waiting times,rounded to two decimal places,is:
-The variance of waiting times,rounded to two decimal places,is:

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