Asample of 317 urban adult residents of a particular state revealed 61 who favored increasing the highway speed limit from 55 to 65 mph, whereas a sample of 179 rural residents yielded 74 who favored the increase. (a) calculate the point estimate and margin of error for a 95% confidence interval for the difference in parameters p1 − p2, where p1 refers to the true proportion of the urban population that favors increasing the speed limit and p2 refers to the true proportion of the rural population that favors increasing the speed limit.(round your answers to two decimal places.) estimate = margin of error = (b) does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? test h0: p1 − p2 = 0 versus ha: p1 − p2 ≠ 0 using α = 0.05. (round your test statistic to two decimal places and your p-value to four decimal places.) z = p-value = 0.0000 state the conclusion in the problem context. reject h0. the data does not suggest that the sentiment for increasing the speed limit is different for the two groups of residents. fail to reject h0. the data suggests that the sentiment for increasing the speed limit is different for the two groups of residents. fail to reject h0. the data does not suggest that the sentiment for increasing the speed limit is different for the two groups of residents. reject h0. the data suggests that the sentiment for increasing the speed limit is different for th