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When Quincy saw the length of the line at the department store's cash register, he predicted he'd have to wait 1515 minutes. He actually waited only 1010 minutes. What is the percent error for Quincy's prediction?\newlineIf necessary, round your answer to the nearest tenth of a percent.\newline____%\%

Full solution

Q. When Quincy saw the length of the line at the department store's cash register, he predicted he'd have to wait 1515 minutes. He actually waited only 1010 minutes. What is the percent error for Quincy's prediction?\newlineIf necessary, round your answer to the nearest tenth of a percent.\newline____%\%
  1. Calculate Difference: Calculate the difference between the predicted time and the actual waiting time.\newlineDifference = Predicted time - Actual time\newlineDifference = 1515 minutes - 1010 minutes = 55 minutes
  2. Calculate Percent Error: Calculate the percent error using the formula: Percent Error = (PredictedActual/Actual)×100%(|\text{Predicted} - \text{Actual}| / \text{Actual}) \times 100\%.\newlinePercent Error = (5/10)×100%(5 / 10) \times 100\%\newlinePercent Error = 0.5×100%=50%0.5 \times 100\% = 50\%

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