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

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

a$.$ Naive.

Number of requests

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

Number of requests

c$.$ Exponential smoothing with $a=\mathrm{.}25.$ Use $23$ for week $2$ forecast. $($Round your intermediate forecast values and final answer to $2$

decimal places.$)$