The test statistic is Z=

The critical value(s) is (are)=

Since the test statistic is more extreme/ not more extreme than the critical value(s), reject/ do not reject H0. There is insufficient/sufficient evidence to conclude that there is a difference between the two population proportions.

Small-business telephone users were surveyed 6 months after access to carriers other than Carrier A became avallable for wide-area telephone service, Of a random sample of 270 Carrier A users, 141 said they were attempting to learn more about thes options, as did 160 of an independent random sample of 230 users of alternate carriers. Test, at the 5% significance level against a two-sided alternative, the null hypothesis that the two population proportions are the same. Click the link to view a standard normal distribution table. Let Px be the proportion of Carrier A users who said they were attempting to learn more about their options and Py be the proportion of users of alternate carriers who said they were attompting to leam more about their options. Dotermine the null and alternative hypothesos. Choose the correct answer below. A. H0:Px=Py=0H1:PxPy0 B. H0:PxPy=0H1:PxPy>0 D. H0:PxPy=0H1:PxPy