The mean is the data set is 50 and the standard deviation is 26. Can anyone help me?

10 20 30 40 50 60 70 80 90 1. If we want to estimate the probabilities of this graph, we should use 2. How much of the data can we estimate to be between x- values -2 and 102? There is % of the data is between -2 and 102. 3. How much data is between 1 standard deviation of the mean? There are o of the data is between 1 standard deviation of the mean