Calculate Necessary Sample Size. To find this out you need to be clear about who. Decide on a margin of error.
The region to the left of and to the right of 0 is 05 0025 or 0475. Therefore the sample size can be calculated using the formula as 10000 196 2 05 1-05 005 2 10000 1 196 2 05 1-05 005 2 Therefore 370 customers will be adequate for deriving meaningful inference. Calculate the number of respondents needed in a survey using our free sample size calculator.
The z used is the sum of the critical values from the two sampling distribution.
That the total sample size is given by the sum of the sub-sample sizes. Popular Course in this category. What does that look like in practice. Assume the population standard deviation is 025 inches.
