Fifty employees of XYZ-Garment Factory selected at random and their production in last year recorded and given in below: 147, 148, 149, 141, 135, 125, 135, 166, 156, 156, 148, 175, 117, 132, 136, 169, 185, 146, 158, 119, 177, 164, 175, 126, 158, 194, 134, 156, 144, 195, 167, 148, 150, 187, 142, 150, 167, 123, 106, 187, 135, 179, 159, 164, 123, 152, 162, 111, 132, 152. Arrange the above data in a suitable frequency distribution table with classes 110-120, 120 130, ... etc.

ii. If 1000 employees are working in this factory and employee's production are in normal distribution. Find the following: (a) What is the total production of the factory in last month? (b) 68% of the employee's minimum and maximum amount of production. (c) 95% of the employee's minimum and maximum amount of production. (d) 99% of the employee's minimum and maximum amount of production