Question

The range for a set of data has been computed to be 36. Based on this information, what planning value would be used for the standard deviation when computing the desired sample size required for a confidence interval estimate?

a) 4
b) 9
c) 6
d) 36

Answer 1

The planning value for the standard deviation would be 6 when computing the desired sample size for a confidence interval estimate based on a range of d) 36. Hence, d) is correct.

Step-by-step explanation:

To compute the desired sample size required for a confidence interval estimate, we need to use a planning value for the standard deviation. In this case, since the range for the data has been computed to be 36, we can use the formula:

Planning value = Range / 6

Therefore, we have:

Planning value = 36 / 6 = 6

The planning value for the standard deviation is 6.