What is the experimental probability that the next person you survey does NOT have a gaming system. You are writting an article on gaming systems for you school newspaper. You take a survey of 250 people ages 13 - 18 and ask whether they have a home gaming system, a portable gaming system, or no gaming system.
Age
13 14 15 16 17 18

Home Gaming 12 22 26 32 24 26
Portable Gaming 5 5 4 9 7 6
No Gaming 18 12 8 6 12 16

Question

What is the experimental probability that the next person you survey does NOT have a gaming system.  You are writting an article on gaming systems for you school newspaper. You take a survey of 250 people ages 13 - 18 and ask whether they have a home gaming system, a portable gaming system, or no gaming system.
                                               Age                   
                                13 14 15 16 17 18

Home Gaming           12 22 26 32 24 26  
Portable Gaming         5  5   4   9   7   6  
No Gaming                18 12  8  6   12  16

jim_thompson5910 · Answer

There are 250 people total

Out of these 250 people there are 18+12+8+6+12+16 = 72 people who do not have a gaming system (added up the values in the bottom row)

so the probability is 72/250 = 36/125

if you need it as a decimal number, then use a calculator to get 36/125 = 0.288, and this is a 28.8% chance

jim_thompson5910 · Answer

btw for some very strange reason, all of the values in that table add to 240 (not 250)

but the problem clearly states that "You take a survey of 250 people"

anonymous · Answer

O thanks!!! ya i realized that but its out of a book.. so! not really anything i can change there! lol

jim_thompson5910 · Answer

yeah hard typo to catch unless you add up all those numbers (which many aren't willing to do)

anonymous · Answer

Ya! i ended up doing that and noticed it! but not gonna say anything! lol

jim_thompson5910 · Answer

lol it might help to bring it up with your teacher and s/he might know what to do

anonymous · Answer

Haha thanks online school it is harder to do that ! but i am sure it will be fine :) 
Thanks for the help! btw!

anonymous · Answer

O you know this is my fault the top numbers for home gaming the last one should be 26 not 16 :)

jim_thompson5910 · Answer

you're not able to contact the teacher?

jim_thompson5910 · Answer

oh that accounts for the missing 10 that went AWOL, lol thanks

anonymous · Answer

Haha totally my fault i looked mack in the book and i typed it in wrong! My bad np!

jim_thompson5910 · Answer

that's ok, there's a lot to keep track of and it happens all the time to me

anonymous · Answer

Haha ya forsure!! kk welll thanks allot i have like 2 finals to do now and again thanks for the help! :)

jim_thompson5910 · Answer

good luck and yw

anonymous · Answer

Haha thanks

jim_thompson5910 · Answer

np

anonymous · Answer

The table numbers add to 250.

anonymous · Answer

@jim_thompson5910  you added incorrectly