1.) In determining monthly seasonal indexes for natural gas consumption, the sum of the 12 means for gas consumption as a percentage of the moving average is 11.95. To get the seasonal indexes, each monthly mean is to be multiplied by (11.95 / 12.00). true or false?

2.)In determining weekly seasonal indexes for natural gas consumption, the sum of the 52 means for gas consumption as a percentage of the moving average is 51.95. To get the seasonal indexes, each monthly mean is to be multiplied by (52.00 / 51.95). true or false?

3.)

The trend line

ŷ = 0.75 + 0.005t was calculated from quarterly data for 2000-2004, where t = 1 for the first quarter of 2000. The trend value for the second quarter of the year 2005 is 0.86. true or false?