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(4 pts) A random sample of 19 rainbow trout caught at Brainard Lake, Colorado had mean length of x =11.9 inches with a sample standard

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(4 pts) A random sample of 19 rainbow trout caught at Brainard Lake, Colorado had mean length of x =11.9 inches with a sample standard deviation of's = 2.8 inches. Find a 99% confidence interval for the population mean length of all rainbow trout in this lake

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