QUESTION 1 The duration of time from first exposure to HIV infection to AIDS diagnosis is called the incubation period. The incubation periods of 7 HIV infected individuals is given below (in years): 12.0 10.5 9.5 6.3 13,5 12,5 7.2 a. Calculate the sample mean - show your details. b. Calculate the sample median. show details c. Calculate the sample standard deviation, show details

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