Energy Cost Family ID 1 Family energy cost data 211 1. An economist wants to determine whether the monthly energy cost for families has changed from the previous year, when the mean cost per month was...

Extracted text: Energy Cost Family ID 1 Family energy cost data 211 1. An economist wants to determine whether the monthly energy cost for families has changed from the previous year, when the mean cost per month was $200. The economist randomly samples 25 families and records their energy costs for the current year. Has the energy cost changed significantly since last year? 572 558 3 250 4 478 307 184 7 (1) The statistical test that you choose 8 (2) The answer to the question as a statistical statement. 435 460 308 10 188 11 111 12 676 13 326 14 142 15 255 16 205 17 77 18 190 19 320 20 407 21 333 22 488 23 374 24 409 25