Health officials are monitoring a screening program from STD testing at a facility. For a one-month period 220 individuals have been tested for a particular STD. 60 people tested positive and 160 people tested negative. Of the 60 people who tested positive, 8 truly did not have the disease (false positive). Of the 160 who tested negative, 150 truly did not have the disease. What would the positive predictive value be for this test?a. 8 / 52 + 8 = 13%
b. 52 / 52 + 10 = 84%
c. 52 /52 + 8 = 87%
d. 150 / 150 + 10 = 94%
e. 150 / 150 + 8 = 95%

Andra has a family history of osteoporosis. her doctor advises her to eat foods rich in calcium. which foods should she add to her diet? a. fruits, especially grapes and berries b. unsaturated fats like olive and soybean oil c. beet greens, broccoli, and cheese

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses.b) the infected individuals happened to be infected with all three virus types.c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly.d) the human was likely infected with various bacterial strains that contained all three rna viruses.

Rotation of the head is made in atlanto-occipital joint or not?