Question

The average time it takes a loaf of bread to rise is 2.4 hours with a standard deviation of 0.6 what is the zscore of a loaf that takes 3.6 hours to rise

Answer 1

                                                     3.6-2.4       1.2
Here the z-score would be   z = ------------- = -------- = 2 (answer) 
                                                        0.6            0.6