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Suppose weights in pounds of dogs in a city are normally distributed and have a...

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Suppose weights in pounds of dogs in a city are normally distributed and have a known population standard deviation of pounds and an unknown population mean A random sample of 17 dogs is taken and gives a sample mean of 30 pounds Find the confidence interval for the population mean with a 80 confidence level Z0 10 1 282 OW Z0 05 1 645 Use the common z values given above Round the final answer to two decimal places Z0 025 1 960 Z0 01 2 326 Z0 005 2 576

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