## anonymous 3 years ago .What was E(X), the expected number of bases for Ichiro at a typical at-bat in 2001? During his 2001 MVP season for the Seattle Mariners, Japanese baseball sensation Ichiro Suzuki hit 190 singles, 32 doubles, 10 triples, and 10 home runs in a total of 692 at-bats. The following table arranges these data in terms of the number of bases for a hit, counting 0 bases for the times when he did not get a hit, and 4 bases for home runs. Number of Bases 0 1 2 3 4 Number of Times 450 194 32 5 11 What was E(X), the expected number of bases for Ichiro at a typical at-bat in 2001? If necessa

1. anonymous

2. anonymous

|dw:1344049685097:dw|

3. anonymous

I know the formulas but i don't understand how to use them.

4. anonymous

oh sorry not that formula...

5. anonymous

|dw:1344049973446:dw|

6. anonymous

That still doesn't mean anything to me . I don't get it at all.

7. anonymous

do u know how to find MEAN of the given data

8. anonymous

hey @LMarieee u there?

9. anonymous

Like in just a set of numbers .. add them up, then divide by how many numbers are given <- I know that .. as in this, idk.

10. anonymous

ok then find it and|dw:1344050263100:dw|

11. anonymous

got it?

12. anonymous

Number of Bases 0 1 2 3 4 Number of Times 450 194 32 5 11 total at bats $$450+194+32+5+11=692$$

13. anonymous

number of bases $1\times 194+2\times 32+3\times 5+4\times 11=317$

14. anonymous

$E(x)=\frac{317}{692}$ it is late so check my arithmetic

15. anonymous

AND THAT IS the MEAN and the answer

16. anonymous

Oh okay, I get it now. Thank you both. Wait .. I dont divide 692 into 317 right? i just keep it as is?

17. anonymous

depends on whether you want a decimal or a fraction

18. anonymous

Alright then, thank you (:

19. anonymous

WELCOME

20. anonymous

you could say $$.458$$ rounded

21. anonymous

No, I think i just need it fraction form. Thanks once again