Question

People at a local shopping mall were asked how many books they read in the last year. The results are given in the table below. However, one value is missing. Use the information in the table below for parts a, b and c below. X P(x) 1 2 0 0.205 0.166 P(2) 3 0.191 4. 0.135 5 0.169 a. What is the value of P(2) that will make the table a probability distribution? (2 points) b. What is the mean (L) of the probability distribution constructed in part a? (Round your answer to 3 decimal places). (1 point)

Answer 1

0.205 0.766 2 P(2) 3 0:19) 4 0.195 5 0.169 for p.d.f {fra) at 0 0.25 +0.166+ P(2) + 0.191+ 0.135 +0.169=1 0.866 tp (2) =) P/2) = 0.134 2 mean= E(X)= {X. PlX=2) oxo 205 +1x 0.166 t 0.134 × 2 + 3x0.19) tux 0.135 +58 0.169 0.166 +0.268 + 0.573 +0.540 + 0.845 2.392 Please like