What is the confidence interval for the data set at 95%? (use the appropriate student's t-distribution value for the given confidence level: 1.895 for 90%, 2.365 for 95%, and 3.500 for 99%

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2