question related to statistics

Table 1 lists the systematic uncertainties on a matter-antimatter asymmetry, also known as charge-parity (CP) asymmetry, measured for the decay of a Do meson into a K+ K-7 7 final state. Given that the CP asymmetry ANA - NB NA + NB where NA = 10974 + 117 and NB = 10749 + 116, You may assume that NA and NB are uncorrelated and that the systematic uncertainties are uncorrelated. Table 1: Systematic uncertainty contributions on A for Do - K+K-at7- data. Source of systematic uncertainty |Magnitude of contribution mis-reconstructed signal shape 0.001 Charged particle identification 0.004 momentum (p* (D)) cut 0.002 Detector asymmetry 0.001 The BaBar experiment measured D+ events with a CP asymmetry A of -0.099 + 0.011 in the decay channel D+ - KsKnow . The number I of even parity events in this decay is given by I = N(1 + A)/2, and N is the total number of events. Compute the correlation between / and A given the following information: N = 15079 + 239 r = 6792 + 120