E) choices are p, o, u, z, t

Suppose that we wish to know with 87% confidence the percent of the electorate in a county that identifies itself as Democratic. We conduct a simple random sample of 750 people in this county and find that 308 of them identify as a Democrat. Find the 87% confidence interval for the true proportion. Round answers to 2 decimal places where possible. (a) Number of successes x= (b)n= (c) Probability of success p'= (Use decimal format) (d) Probabilty of failure q'= (Use decimal format) (e) Critical Value Select an answerv (f) Find the 87% confidence interval and complete the sentence below. Conclusion: We estimate with % confidence that the true proportion of the electorate in a county that identifies itself as Democratic is between and