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Question 4 0.85 points Save Answer The following time series shows the number of emergency calls for an ambulance over the past four months. The number of calls is as follows. May-59, June 62, July 60, August 57. That is the forecast for ambulance calls for September using a two period moving average forecast? 60.0 615 59.5 58.5 Question 4 0.85 points The following time series shows the number of emergency calls for an ambulance over the past four months. The number of calls is as follows. May 59, June 62, July 60. August 57. That is the forecast for ambulance calls for September using a two period moving average forecast? O 60.0 O 61.5 59.5 58 5