Question

2. Hematuria is the presence of blood in the urine. The following table includes the results of a study conducted in Puerto Rico to 435 people aged 65 years or older and with a viral infection. Sex With hematuria Without hematuria Total Male 185 29 214 Female 191 30 221 Total 376 59 435 of 5 960 Words QE E

Answer 1

Sex with hematurla without hematurele Male 165 29 214 Female 19 30 22 Total 376 59 435 Pl hematuile) 3 76 435 0.06. (b) Pl hematurale male) P(hematuh n male) Plmale) 185/435 2141435 105 214 0.86 Pl hematvrala Female) - PChematwiele n emale) Pl Female) 191/435 221/435 = -0.86 191 22/ a Яр PC hemturla n Female)_ Pthematurale) Plemale) 191 376 22/ 435 435 435 So yes hem aturale is sex Independent

Answer 2

SOLUTION :

a.

P(Hematuria) = 376/435 = 0.8644 (ANSWER)

b.

P(Hematuria | Male) = 185/214 = 0.8645 (ANSWER).

c.

P(Hematuria | Female) = 191/221= 0.8643 (ANSWER).

d.

Having hematuria is not sex-dependent since its probability is almost same whether male or female or combined population. (ANSWER).