Question

While doing a project for P. E. class, Valeria researched the number of athletes competing in an international sporting event. Number of athletes Number of countries 6 4 67 4 85 4 94 2 100 6 X is the number of athletes that a randomly chosen country has. What is the expected value of X? Write your answer as a decimal.

Answer 1

The expected value is given as:

$E(x)=\sum ^{}_{}x_iP(x_i)$

Then we need the probability for each row. For each number of athletes we have the following probability: