A company provides home internet networking services and promises customers to be compensated for a delayed service if the service calls cannot be resolved under an hour. Times for service calls is...

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Extracted text: A company provides home internet networking services and promises customers to be compensated for a delayed service if the service calls cannot be resolved under an hour. Times for service calls is known to follow a normal distribution with a mean of 53 minutes and standard deviation of 10 minutes. What is the shortest range of service times that includes 50% of all service calls? Answer: