A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof. decides to do her own survey. If the proportion fo her students supporting the tuition increase exceeds .70, she will vote to support an increase. A random sample fo 400 students are selected and 215 are found to support the tuition increase. Use .01
State the hypothesis
set the criterion for rejecting the Ho,
compute the test stat,
construct the CI and interpret the results.
This solution is a test of hypothesis about a population ...
This solution is a test of hypothesis about a population proportion. We state the hypothesis, set the criterion for rejecting the Ho, compute the test stat, construct the CI, and interpret the results.