The values of Alabama building contracts (in millions of dollars) for a 12-month period follow.
240 350 230 260 280 320 220 310 240 310 240 230 a. Construct a time series plot.

(a) What type of pattern exists in the data?
(b) Compare a three-month moving average forecast with an exponential smoothing forecast. Use alpha =0.2 Which provides the better forecasts based on MSE?
(c) What is the forecast for the next month?

answer is 144

step-by-step explanation:

answer: 1475

step-by-step explanation:

becuase you have to know what they are asking you

where is the graph? need more info

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."