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Question 12 of 25The table below shows the probability distribution of student ages in a highschool with 1500 students. What is the expected value for the age of arandomly chosen student?Age131415161718Probability 0.01 0.25 0.27 0.30 0.160.01O A. 15.35B. 15.31C. 15.50D. 15.38

Question 12 of 25The table below shows the probability distribution of student ages in a highschool with 1500 students What is the expected value for the age of class=

Respuesta :

Let's find the expected value for the age of a randomly chosen student:

13 * 0.01 = 0.13

14 * 0.25 = 3.5

15 * 0.27 = 4.05

16 * 0.3 = 4.8

17 * 0.16 = 2.72

18 * 0.01 = 0.18

Expected value = 0.13 + 3.5 + 4.05 + 4.8 + 2.72 + 0.18

Expected value = 15.38

Cadince, now you're able to select the right choice.

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