4. A random sample from a population of voters consists of 152 democrats and 175 non-democrats. (a) Give a 95% confidence interval for the proportion of democrats in the pop-ulation. (b) What sample size would be needed to estimate the proportion of democratsin the population to within +.02 with 95% confidence?

The sample size n is 152+175=327. The number of democrats (x) is 152.

A random sample from a population of voters consists of 152 democrats and 175 non- democrats. (a) Give a 95% confidence interval for the proportion of democrats in the pop ılation. (b) What sample size would be needed to estimate the proportion of democrat n the population to within +.02 with 95% confidence?

A random sample from a population of voters consists of 152 democrats and 175 non- democrats. (a) Give a 95% confidence interval for the proportion of democrats in the pop ılation. (b) What sample size would be needed to estimate the proportion of democrat n the population to within +.02 with 95% confidence?

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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