A survey of an urban university showed that 850 of 1,000 students sampled supported a fee increase to fund improvements to the student recreation center.
a. What is the point estimate for the proportion of students who supported the fee increase? b. Using the 0.90 level of confidence, construct the confidence interval for the population proportion. c. If university officials say that at least 85% of the voting student population need to support the fee increase (to be applied), what conclusion can be drawn, based on a 0.90 level of confidence?