Find the Standardized Test Statistic Estimate, Z, to Test the Claim

Multiple Choice

Find the standardized test statistic estimate, z, to test the claim that $\mathrm { p } _1 > \mathrm { p } _ { 2 }$ Assume the samples are random and independent.
Sample statistics: $\mathrm { n } _ { 1 } = 100 , \mathrm { x } _ { 1 } = 38 , \text { and } \mathrm { n } _ { 2 } = 140 , \mathrm { x } _ { 2 } = 50$

A) 0.362
B) 2.116
C) 1.324
D) 0.638