STA 205 Lecture 5: Packet 5 - Confidence Interval for p
Document Summary
Packet 5: confidence interval for the population proportion. Nku and murray state university are two regional state schools in kentucky. While both of these schools draw from the surrounding states to fill its student body, most believe that the majority of students are from the state of kentucky. Council of postsecondary education would like to sample students from both schools to estimate the proportion of students from ky. a sample of 562 nku students found that 373 were from ky. State students found that 330 were from ky. Nuu f 35 2 0. 6637weestimate 66. 3t l of allwku students are from ky. Msu pot goffs 0. 6804 weestimate 6804l of all msu students arefrom ky. The estimates are good b c they are basedfrom data from random samples. But we have no confidence that they are exactly correct. A confidence interval estimates an unknown population parameter based on data from a sample with some prespecified degree of certainty level of confidence.
