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A scientist predicts engineers are more creative than physicians. On a standard creativity test, the population mean for physicians is 40.5. For a sample of

A scientist predicts engineers are more creative than physicians. On a standard creativity test, the population mean for physicians is 40.5. For a sample of 25 engineers, the sample mean = 42.1 (estimated population variance = 15.52) using the same test.

1. What is the tcrit?

2. what is your obtained t value?

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