Ask your own question, for FREE!
Mathematics 18 Online
OpenStudy (grace00now):

PLEASE HELP ALGEBRA 2: ok so I have ping-pong balls 0,1,2,3,4 or 5. My table looks like this basically: x f 0 33 1 30 2 18 3 21 4 42 5 6 Now I need to enter the correct probabilities in decimals to complete the probability distribution table. And this is where i get lost! :( please help me!

OpenStudy (mathmate):

We know that the area of a probability distribution adds up to one. If you have a discrete distribution (present case) where N= sum of all frequencies, and \(f_i\)=frequency of event i, then P(i)=\(f_i/N\) Draw a histogram of P(i) against i. Note that each P(i) should be less than one.

OpenStudy (grace00now):

thats where Im having the issue cause I can't do it in a way that it ends less than one it keeps going like 7 something

OpenStudy (mathmate):

P(i)=\(f_i\)/N Did you find N (sum of all frequencies), and what did you get?

OpenStudy (grace00now):

150

OpenStudy (grace00now):

P(i)=fi/150

OpenStudy (grace00now):

right?

OpenStudy (mathmate):

yes, so far so good, continue!

OpenStudy (grace00now):

P(i)=F33/150

OpenStudy (grace00now):

aaaaaaaagh im so frustrated!

OpenStudy (grace00now):

P(0)=33/150

OpenStudy (grace00now):

?

OpenStudy (grace00now):

and I get 0.22 for the first one

OpenStudy (grace00now):

if i did that one right I got the others. I just did the math like that and my probabilities added up to 1 can you please tell me if that one is correct?!?!?!

OpenStudy (mathmate):

Yes, P(0)=0.22 is correct. As you said, you can do the rest of it the same way. To avoid random mistakes, add up all values at the end to make sure the sum is 1.0

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
AsianPanda08: What should i eat for dinner tonight? I can't choose
51 minutes ago 51 Replies 2 Medals
Nina001: Trying 2 figure out what is the square root of 8746685
1 hour ago 23 Replies 2 Medals
SnowyBreaks: Is it bad to lose 3.8 pounds in less than 2 days?
50 minutes ago 42 Replies 0 Medals
kaelynw: tried a lil smt, the arm is off but i like the other stuff
4 hours ago 8 Replies 2 Medals
laylasnii13: Who wanna write or make a song with me???
4 hours ago 8 Replies 0 Medals
kaelynw: art igg
12 hours ago 13 Replies 2 Medals
XShawtyX: Art
1 day ago 6 Replies 0 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!