The 95 Confidence Interval for the weights in pounds of a sp

The 95% Confidence Interval for the weights (in pounds) of a special type of rock has found to be 4.19, 6.85. What will be the margin of error? (Hint: Sample mean +/- margin of error = confidence interval)

Solution

Note that

margin of error = (upper bound - lower bound)/2

= (6.85 - 4.19)/2

= 1.33 [ANSWER]