An electrical contractor's records during the last five weeks indicate the number of job requests:

Week: $12345$

Requests: $2022182122$

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Predict the number of requests for week $6$ using each of these methods:

a$.$ Naive.

b$.$ A four$-$period moving average. $($Round your answer to $2$ decimal places.$)$

c$.$ Exponential smoothing with $\backslash$alpha $=0\mathrm{.}30.$ Use $20$ for week $2$ forecast. $($Round your intermediate calculations and final answers to $2$ decimal places.$)$