1. If the 95% confidence interval for the number of moviegoers who purchase from the concession stand is 30% to 45%, then fewer than half of all moviegoers do not purchase from the concession stand.
2. If zero lies inside the 95% confidence interval for m, then zero is also inside the 99% confidence interval for m.
3. There is a 95% chance that the mean y of a second sample from the same population is in the range x ± 1.96s/ √n.
4. To guarantee a margin of error of 0.05 for the population proportion p, a survey needs to have at least 500 respondents.
5. The 95% t-interval for m only applies if the sample data are nearly normally distributed.

  • CreatedJuly 14, 2015
  • Files Included
Post your question