26. The mean of a set of data is 25 with a standard deviation of 2. What is the interval about the mean of the data within one standard deviation?
O A) 23 to 27
O B) 25 to 27
C) 21 to 29
OD) 19 to 31

its c or d   take a lucky guess my dude

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.