A fish farmer selects a sample of fish from one of the ponds in which...

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A fish farmer selects a sample of fish from one of the ponds in which all of the tilapia were spawned at the same time If the sample mean length is 6 2 inches with a population standard deviation of 0 91 inches what are the 90 confidence intervals for the true mean with sample sizes of 16 and 64 Confidence Interval 80 O 5 8 6 6 and 6 0 6 4 O 5 7 6 7 and 6 1 6 3 O 5 9 6 5 and 5 9 6 5 5 75 6 65 and 5 95 6 45 85 90 95 1 282 1 440 1 645 1 960 z value 95 4 2 99 99 5 99 7 99 9 3 2 576 2 807 3 291

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