The ages of 100 people in a family camping site are as follows: 1 1 11 1 2 2 3 3 4 4 4 6. 6. 7 8 8 8 8 9 7 7 7 10 10 10 11 11 12 12 12 12 12 9. The manager decides to charge less for people over the age of 60. a Find the mean age of the 100 people and decide whether or not the manager will lose much revenue due to this 13 13 14 15 15 16 16 18 18 18 19 19 19 20 21 21 23 24 24 25 34 35 35 35 36 36 37 38 38 38 decision. 39 40 40 40 41 42 42 43 43 45 45 47 49 49 50 50 50 55 57 62 b Using an appropriate sampling method, pick a random sample of 35 people and find the mean age of the sample. 62 63 65 65 67 67 69 70 71 72

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