The graph of a normal curve is given on the right Use the gr

The graph of a normal curve is given on the right. Use the graph to identify the values of Mu. and sigma. Mu = 2 Sigma = 1

Solution

Normal bell curve is symmetric about mean, so mu = 2 (mid point of curve)

Almost all data is withn 3 std dev, i.e, within -3 sigma to 3 sigma, same as -1 to 5 => (5 + 1) = 6 sigma => sigma = 1