Find the Standardized Test Statistic, Z, to Test the Claim $\mathrm { p } _ { 1 } \neq \mathrm { p } _ { 2 }$

Multiple Choice

Find the standardized test statistic, z, to test the claim that $\mathrm { p } _ { 1 } \neq \mathrm { p } _ { 2 }$ Assume the samples are random and independent.
Sample statistics: $\mathrm { n } _ { 1 } = 1000 , \mathrm { x } _ { 1 } = 250 , \text { and } \mathrm { n } _ { 2 } = 1200 , \mathrm { x } _ { 2 } = 195$

A) 5.09
B) 2.80
C) 4.76
D) 3.21