The news organization is also interested in detecting whether there is a difference between women and men in their level of support for candidate Smith. Let p1 denote the population proportion of female voters who support candidate Smith, and let p2 denote the population proportion for male voters. Among the 900 voters surveyed 472 are women and 428 are men. Of the 472 female voters, 270 support candidate Smith, while 215 of the 428 male voters support. The following printout shows an analysis the news organization performs:

Test and Cl for One Proportion Test of p = 0.5 vs p > 0.5 Sample X N Sample p 95% CI Z-Value P-Value 1 485 900 0. 538889 (0.506322, 0.571456) 2.33 0 . 010 Using the normal approximation