$\backslash$table$[[t,1,2,3,4,5,6,7],[yt,131,108,104,99,95,90,88]]$

$($a$)$ Choose the correct time series plot:

$($i$)$

$($ii$)$

$($iii$)$

$($i$)$

Select your answer $-$

What type of partern exists in the data?

Select your answer $-$

$($b$)$ Use simple linear regression analysis to find the pagrameters for the line that minimizes MSE for this time series. If required, round your answers to two decimal places. Use a minus sign for negative numbers, if any.

$y-$intercept, $b_0=$

Slope, $b_1$

MSE $=$

$($c$)$ What is the forecast for $t=8?$

If required, round your answer to one decimal place.