Mathematics, 29.04.2021 17:00 kaylam5599

Nationwide, the average waiting time until a electric utility customer service representative answers a call is 360 seconds. The Gigantic Kilowatt Energy Company randomly sampled 50 calls and found that, on average, they were answered in 335 seconds with a population standard deviation of 55 seconds. Can the company claim that they are faster than the average utility at α = 0.05?

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Nationwide, the average waiting time until a electric utility customer service representative answer...