WHO estimates that 1.5 million people died from diarrheal diseases in 2012, which comprises about 2.7 percent of deaths. Fortunately, thatâs down from 2.2 million in 2000. Diarrheal disease is the second top killer of children under age five. Tragically, about 760,000 children die from diarrheal diseases each year.
1 After 20 minutes turn the oven down to 325 degrees F. and roast until the desired internal temperature is reached (see guide below). 2  For medium-rare this will take approximately 15 minutes per pound. 3  Transfer to a large platter, and let the prime rib rest, loosely covered with foil for 30 minutes before serving. When the oven is hot, put the roast in and cook for 20 minutes to sear the outside of the roast. 2  After 20 minutes turn the oven down to 325 degrees F. and roast until the desired internal temperature is reached (see guide below). 3  For medium-rare this will take approximately 15 minutes per pound.
Relevance. Rating Newest Oldest. Best Answer: For a boneless prime rib it averages about 15 minutes per pound at 350F, but it really is best to have a meat thermometer. For medium-rare, you want to take it out of the oven at 135, because it's going to keep cooking a bit, even after it's out of the oven.o to this website for complete directions for low temperature cooking process:http://www.cookingforengineers.com/recip... If you want to cook the prime rib at a higher temperature, start out a 450 degrees F for 15 minutes, then reduce the temperature to 325 degrees F, and roast for 12 to 13 minutes per pound.