500 of the registered voters in a district are selected at random and asked to indicate whether they plan to vote for the Democratic incumbent or the...

1. 500 of the registered voters in a district are selected at random and asked to indicate whether they plan to vote for the Democratic incumbent or the Republican challenger. Of the 500 surveyed, 350 said they were going to vote Democratic. Using the 94% level of confidence, what are the confidence limits for the population proportion that plans to vote Democratic? 

2.Consider a one-tailed hypothesis test, with a critical Z of -2.33. Which of the following is true about the hypothesis test?