In 1992, the Journal of Epidemiology and Community Health published an article that claimed that the average incubation period from infection with HIV to the development of AIDS was 6.5 years with a standard deviation of 4.2 years. Complete the following steps to determine the probability that in a sample of 350 infected individuals, the sample mean is between 6.3 and 6.6 years. (NOTE: Remember that z-scores have two decimal places and areas/probabilities have four) Insert the following values from the question: = 6.5 years = 4.2 years n=350 What is the first z-score? individuals What is the second z-score? What are the areas? What is the probability that the sample mean is between 6.3 and 6.6 years?