Susie, first determine if it's still alive or if it died over the winter. Scrape a little bit of bark away with your thumbnail, low down on a big stem. If there is green under there, it is still alive and you just need to wait. If it is dry and brown and the stems are brittle, it's deceased.
Just a word about planting in the fall, not really necessary or a good idea to fertilize a deciduous plant when it is going dormant for winter. The fertilizer can actually burn the roots because it's not being used up by the plant to grow any leaves.
You might also want to check the drainage situation in the spot where you planted the bush. If water was/is sitting around the plant, the roots will rot. If the plant is dead and you want to plant another in that same place, amend the soil generously enough so as to raise the soil level a few inches, then plant on top of a little mound. Mulch around the plant and make sure it doesn't dry out but this way at least it won't drown.
