Ex 6: Normal Distribution A company produces units with an average length of 10 cm, and a standard deviation of 0.2 cm. There is a 0.95 (or 95%) probability that the length will be more than X cms. Calculate a value for X (remember that there is a 0.5 (or 50%) probability of the length being more than the average of 10 cms, because the normal distribution is symmetrical).