Determine the margin of error for a confidence interval to estimate the population mean with n = 20 and σ = 16 for the following confidence levels:
Answer to relevant QuestionsDetermine the margin of error for a 95% confidence interval to estimate the population mean when σ = 40 for the following sample sizes: a. n = 10 b. n = 30 c. n = 50 According to Expedia.com, workers in Italy lead the world in paid vacation days, averaging 42 days per year. The following data show the number of paid vacation days for a random sample of 20 Italian workers. These data can ...The U. S. Department of Education reported that in 2007, 67% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from ...Determine the sample size needed to construct a 95% confidence interval to estimate the population mean for the following margins of error when σ = 80: a. 10 b. 15 c. 20 Suppose Christiana Hospital would like to estimate the proportion of patients who feel that physicians who care for them always communicated effectively when discussing their medical care. A pilot sample of 40 patients found ...
Post your question