Using cell references, enter a formula in cell B6 to calculate monthly payments for the loan described in this worksheet. The annual interest rate is stored in cell B3, the number of payments in cell B4, and the loan amount in cell B2. Omit the optional arguments. The result of the formula should be a negative number.

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)