Question

Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many grade-point averages must be obtained so that the sample mean is within 0.009 of the population mean? Assume that a 99% confidence level is desired. If using the range rule of thumb, $\sigma$ can be estimated as $\frac{range}{4} = \frac{5 - 0}{4} = 1.25$. Does the sample size seem practical? The required sample size is . (Round up to the nearest whole number as needed.) Does the sample size seem practical? A. No, because the required sample size is a fairly small number. B. Yes, because the required sample size is a fairly small number. C. Yes, because the required sample size is a fairly large number. D. No, because the required sample size is a fairly large number.

          Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many grade-point averages must be obtained so that the sample mean is within 0.009 of the population mean? Assume that a 99% confidence level is desired. If using the range rule of thumb, $\sigma$ can be estimated as $\frac{range}{4} = \frac{5 - 0}{4} = 1.25$. Does the sample size seem practical?

The required sample size is .
(Round up to the nearest whole number as needed.)
Does the sample size seem practical?
A. No, because the required sample size is a fairly small number.
B. Yes, because the required sample size is a fairly small number.
C. Yes, because the required sample size is a fairly large number.
D. No, because the required sample size is a fairly large number.

$Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many grade-point averages must be obtained so that the sample mean is within 0.009 of the population mean? Assume that a 99% confidence level is desired. If using the range rule of thumb, $\sigma$ can be estimated as $\frac{range}{4} = \frac{5 - 0}{4} = 1.25$. Does the sample size seem practical? The required sample size is . (Round up to the nearest whole number as needed.) Does the sample size seem practical? A. No, because the required sample size is a fairly small number. B. Yes, because the required sample size is a fairly small number. C. Yes, because the required sample size is a fairly large number. D. No, because the required sample size is a fairly large number.$

Added by Eva N.

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