The monthly sales of a new business software package at a local discount software store were as follows: week 1 2 3 4 5 6 7 8 9 10 sales 460 415 432 450 488 512 475 502 449 486 1. plot the data and provide insights about the time series. 2. find the best number of weeks to use in a moving average forecast based on mse. 3. find the best single exponential smoothing model to forecast these data.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e. g. 98.7654). x f(x) 0 1 2 3