7. Suppose a sample has a standard deviation of sigma =21.26 and a sample size of n=500. Find the margin of error to the nearest tenth. square

To find the margin of error, we need to use the formula: where:- is the z-score (for a 95% confidence level, )- is the standard deviation- is the sample sizeGiven:- - First, calculate the standard error: Calculate : Now, calculate the standard error: Next, calculate the margin of error: Rounding to the nearest tenth: Therefore, the margin of error to the nearest tenth is .