Question

Alejandra has basketball practice two days a week. eighty- two percent of the time she attends both practices. Nine percent of the time she attends one practice. Nine percent of the times she does not attend either practice how many practices should expect alejandra to attend any given week

Answer 1

Answer:

1.73

Explanation:

The expected value can be calculated as:

$E(x)=x_1P(x_1)+x_2P(x_2)+x_3P(x_3)$

Where x1, x2, and x3 are the possible values that the variable can take and P(x1), P(x2), and P(x3) are their respective probabilities.

So, in this case, the expected value is:

$\begin{gathered} E(x)=2(0.82)+1(0.09)+0(0.09) \\ E(x)=1.64+0.09+0 \\ E(x)=1.73 \end{gathered}$

So, we should expect that Alejandra attends to 1.73 days of practice on a given week,