Posted by Tommy on Thursday, April 18, 2013 at 9:10am.
An oil change shop advertised to change oil within 15 minutes. Based on the data collected on a typical day, what is the probability that oil change will take 15 minutes or less time? Based on the data, do you think the business claim is valid? Explain why or why not.

statistics (incomplete)  PsyDAG, Thursday, April 18, 2013 at 2:38pm
What data?
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