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Age in years Frequency 1-20 924 21-40 3050 41-60 6283 61-100 2728 The age distribution of a certain sample of patients who have been given

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Age in years Frequency 1-20 924 21-40 3050 41-60 6283 61-100 2728 The age distribution of a certain sample of patients who have been given a brand of medication is given in the table above. What is the mean age of this sample correct to two decimal places

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