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 1 inch of the true population mean, what is the minimum sample size that can be taken?

15 dog heights;

Step-by-step explanation:

The formula to be used here is where:

We are given that:

To determine the minimum sample size, , we plug our given values into the formula and solve for

Don't forget to round up here! This means that actually.

Therefore, if we want to be 95% confident that the sample mean is within 1 inch of the true population mean, the minimum sample size that can be taken is 15 dog heights.

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