The sample mean foot length of a simple random sample of 25 third-graders is 22.5 cm. The standard error of the mean is 0.8 cm. Which one of the following is a correct interpretation for the standard error of the mean? A. The typical distance between each individual foot length in the sample and the sample mean foot length is approximately 0.8 cm. B. The typical distance between one sample mean foot length and another sample mean foot length is 0.8 cm. C. The typical distance between each individual foot length in the population and the true mean foot length is approximately 0.8 cm. D. The typical distance between means of samples of size 25 and the population mean foot length is approximately 0.8 cm E. The typical distance between each individual foot length in the sample and the true mean foot length is approximately 0.8 cm.

Step-by-step explanation:

The standard error is used to determine the difference between the sample mean of the data and the true population mean.

Standard error = population standard deviation/square root of the number of samples

Given that the sample mean foot length of a simple random sample of 25 third-graders is 22.5 cm and the standard error of the mean is 0.8 cm, the correct interpretation for the standard error of the mean is

D. The typical distance between means of samples of size 25 and the population mean foot length is approximately 0.8 cm

step-by-step explanation:

first, eliminate the parenthesis:

3

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+

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−

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second, group like terms:

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4

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+

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third, combine like terms:

(

3

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+

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→

−

1

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+

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→

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yes   because as the functions are graphed they eventually will intersect unless otherwise

step-by-step explanation: