Question

The table gives the numbers of new HIV infections in various categories for a certain country and six dependent areas in 2014. Use the table to find the probability that a person diagnosed in 2014 belonged to the following categories. (Round your answers to three decimal places.) Injected Drug User Male Female Total 35,576 9,912 Heterosexual 3,287 7,235 1,600 1,039 (a) female (b) female and an injected drug user (c) male or heterosexual

Answer 1

7,235 Total Hetrosexual Injected Drug user Male 35,576 3,287 1600 40463 female 9,912 103918186 Totals 45,488 10522 2639 58649 a) The probabilety that diagonised person - Ý female is PIE) - Total females Total population. 18186 58,649 - 0.310

(b) Pl female Injected dreeg wer ) = Total no of female deug wer Total population 1039 58649 = 0.018 Pl female Injected dung wer) = 0.018 c) male or hetro sexual Plmale) = Total no. of male Total population 40463 = 0.690 58649 Plhetro Sexual) = hetro sexual Total no persons Total population 10522 - 58649 = 0.179 P (mate & hetro Sexual) - Total no. of hebosexual male persone Total population = 3287 = 0.056 58649

P Imale to hetrosexual) = plmale) +p (hetrosexued) - PC hetrosexual male persons) 0.690 + 0.179 -0.056 = 0,813