Associations in Data:Question 5
- 10
Quantity
The table shows the weights of a sample of
packages carried by an air freight company last
month. Find the mean deviation for the data in
the quantity column.
Weight
(kilograms)
1-3
35
9
57
5
Select one
79
6
152
911
8
809
O o oo
6 18
2 84

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)