(a)Consider the following data on the hours of burnout for a sample of lightbulbs 68 70 86 88 62 61 79 92 116 103 68
63 88 81 62 74 62 94 71 70 58 98
98 65 73 71 70 97 94 59 57 90 71
101 78 43 59 67 61 71 96 75 64 76
72 77 74 65 82 86 66 86 96 107 57
97 86 65 89 72 66 93 106 110

Describe the shape of the data using coefficient measures based on the moments
(6 marks)

(b)A company studied the number of lost-time accidents occurring at its Nairobi Industrial Area, plant. Historical records show that 6% of the employees suffered lost-time accidents last year. Management believes that a special safety program will reduce such accidents to 5% during the current year. In addition, it estimates that 15% of employees who had lost-time accidents last year will experience a losttime accident during the current year. What percentage of the employees will suffer either of the lost-time accident over the two-year period?