The superintendent of a large school district, having once had a course in probability and statistics, believes that the number of teachers absent on any given day has a Poisson distribution with parameter . Use the accompanying data on absences for 50 days to obtain a 95% large-sample CI for . Number of absences 0 1 2 3 4 5 6 7 8 9 10 Frequency 2 4 8 11 8 6 6 2 1 1 1 [Hint: The mean and variance of a Poisson variable both equal , so Z = X /n has approximately a standard normal distribution. Now proceed as in the derivation of the interval for p by making a probability statement (with probability 1 ) and solving the resulting inequalities for .] (Round your answers to two decimal places.) Incorrect: Your answer is incorrect. , Incorrect: Your answer is incorrect