Can I have some help with this

Let X ~ f(a) = if x > 0 be a continuous random variable with density function. If the otherwise median of this distribution is then A is O -In N K O None of the above O 1 -In 2 CO O 3 In N K O 3 In 2A survey of 280 homeless persons showed that 63 were veterans. Construct a 90% confidence interval for the proportion of homeless persons who are veterans. O (0.161, 0.289) O (0.184, 0.266) O (0.167, 0.283) O None of the above O (0.176, 0.274)