Discussion

Discussion

Upper 10%

The figure above, represent the normal curve for the data having a mean of 80 and a standard deviation of 5. The cut-off value of 86.407 in the curve represents the fact that among overall sample 10% of values data is greater than cutoff value 86.407. Further explanation of the figure gives us the idea that there is a 90% probability that the mean of the data will not appear to be greater than 86.407.Lower 5%

The above figure represents that the original data is normally distributed having a mean of 80 along with a standard deviation of 5. It represents ...