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(CORRECT ANSWER) MATH225N Week 8 Final Exam : The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches.

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QUESTION 39

The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken?

z0.10 1.282 z0.05 1.645 z0.025 1.960 z0.01 2.326 z0.005 2.576

Use the table above for the z-score, and be sure to round up to the nearest integer.

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