(Capture Recapture) To estimate the populations size of unicorns in Neverland, first N1 unicorns were captured and tagged. The captured unicorns were...

need help for the last question! May need to use hypergeometric. Thank you!

(Capture — Recapture) To estimate the populations size of unicorns in Neverland, first N1 unicorns were captured and tagged. The captured unicorns were then released. One month later, n unicornswere captured. Let X denote the number of tagged unicorns among the ones in the second sample. a. Use the method of moments to construct an estimator for the population size N, N. Enter aformula below. Use N1 for N1, * for multiplication, / for division, A for power. For example, N1*n"2/X means N1n2/X. ii = n*N1/X \nouiareicornect. Your receipt no. is 155-488 9 W b. Suppose N1=20, n=13. and x=4. Calculate N. Round your answer to the nearest integer. 65 \HDU afElCOFFECI. Your receipt no. is 155-7513 9 W b. Suppose N=59, N1=20, and n=13. Find the probability that N is within 17 of N. That is, find the probability P(42 s N s 76). Round your answer to 4 decimal places. 15855 Submit Answer InCOrrect. Tries 3/5 Previous Tries