4. The manager of University Credit Union (UCU) would like to know what proportion of her customers are satisfied. Using random sampling, 400 checking account customers are contacted by telephone and asked if they are satisfied. 271 of the 400 customers respond Yes. What is the 95% confidence interval estimate for the proportion of the population of checking account customers at UCU who are satisfied? .5317 to .8233 .5 .4317 to .9233 ).6317 to .7233

4. The manager of University Credit Union (UCU) would like to know what proportion of her customers are satisfied. Using random sampling, 400 checking account customers are contacted by telephone and asked if they are satisfied. 271 of the 400 customers respond Yes. What is the 95% confidence interval estimate for the proportion of the population of checking account customers at UCU who are satisfied? .5317 to .8233 .5 .4317 to .9233 ).6317 to .7233

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 6E: List the sample space of each experiment. Tossing three coins

See similar textbooks