This table shows the probability distribution of scores on the 2010 AP Statistics exam. Use the distribution to calculate the expected score of a randomly-selected score. Round the answer to the nearest tenth.

x p(x)
5 0.128
4 0.224
3 0.235
2 0.182
1 0.231

Question

This table shows the probability distribution of scores on the 2010 AP Statistics exam. Use the distribution to calculate the expected score of a randomly-selected score. Round the answer to the nearest tenth.

 

x	p(x)
5	0.128
4	0.224
3	0.235
2	0.182
1	0.231

kropot72 · Answer

$$\large E(X)=\sum_{}^{}xp(x)$$
$$\large =1\times0.231+2\times0.182+3\times0.235+4\times0.224+5\times0.128=?$$

kropot72 · Answer

@K.Binks Are you there?

k.binks · Answer

I'm sorry! Didn't see your post. Could you explain this to me?

k.binks · Answer

nvrmd I got it

kropot72 · Answer

You can calculate it on a reasonably good calculator. What is your result?