Anew screening test for lyme disease is developed for use in the general population. the sensitivity and specificity of the new test are 60% and 70%, respectively. three hundred people are screened at a clinic during the first year the new test is implemented. assume the true prevalence of lyme disease among clinic attendees is 10%. the predictive value of a positive test is: 33.0% 18.2% 94.0% 22.2% 6.0%

The positive predictive value is 18.2%

Step-by-step explanation:

Let TP (true positive) denote the Sensitivity, and TN (true negative) denote the Specificity, and P prevalence. The Positive Predictive Value is calculated as follows:

The positive predictive value is 18.2%

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

(x) - (y) = (1 + 4i)