:
The credit union offered Zach a $200,000, 10 year loan at a 3.625% APR. The bank offers Zach the option to purchase points at a cost of 1% of the loan amount. Each point purchased lowers the APR by 0.125%
Part A
About how many years will it take Zach to break-even if he purchases 1 point? years
Part B
Should Zach purchase the points?

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)