Handout 12a CONFIDENCE INTERVALS SHOW ALL WORK, INCLUDING FORMULAS. NO CREDIT WILL BE GIVEN FOR ANY PROBLEM FOR WHICH NO WORK I5 SHOWNEVEN IF THE ANSWER I5 CORRECT. 1. What would be the quantile used to construct a 98% CI. for i1 when n =19? Write the correct notation for the quantile. Ans 1 2. An instructor wants to estimate the proportion of students that take advantage of free math tutoring offered by their college. Out of a random sample of 4500 students, 1440 use the free math tutoring. 0. Find a point estimate for the proportion of all students that use free math tutoring offered by their college. Ans 2a b. Estimate the proportion of all students that use free math tutoring offered by their college using a 95% CI. Ans 2b 3. How would you interpret a 78% confidence level when n = 280 and you are estimating a