Question: b) Observing this poor performance, the manager enlists a consulting company to train its employees. Following this training, in 2020, the manager collects data from

b) Observing this poor performance, the manager enlists a consulting company to train its employees. Following this training, in 2020, the manager collects data from a sample of 25 calls and finds the average wait time in these 25 calls to be 95 seconds. Can the manager say, with 95% confidence, that the training has improved call center performance? What if the sample size had been 100 instead of 25? (10 points)

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