CA CPT Model Test Paper 13 with solutions for online practice

Find the probability that the value of an item drawn at random form a normal distribution with mean 20 and standard deviation 10 will be between. (i) 10 and 15 (ii) 15 and 25. [Given : Area under normal curve between z = 0 and z = 0.5 is 0.1915, and between z = 0 and z = 1 is 0.3413]