QUESTION 3 Save 3 . To estimate the mean weight of the adult females in a certain region, a simple random of 40 women is selected and the mean of the weights in the sample is 146.2 lb. and the standard deviation of the weights in the sample is 37.6 lb. Write the margin of error of a 95% confidence interval to estimate the mean of all adult females in this region based on this sample. Round your answer to two digits after the decimal sign