anonymous
  • anonymous
Please help? A gambler has developed a weighted six-sided die with sides marked 1, 2, 3, 4, 5, 6. The probability of rolling a 6 is 0.4 and all other sides are equally likely. (X is a random variable). What is the probability that an even number is rolled?
Statistics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
javalos01
  • javalos01
hello
javalos01
  • javalos01
do you need help
anonymous
  • anonymous
Yes, please

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
I do not understand how to find this probability
javalos01
  • javalos01
well do you know probabilities
anonymous
  • anonymous
Yes I do, but what I am confused about is that he gave us an assigned probability. Usually the probability for rolling a dice is 1/6, but he made it .4 and that confuses me.
javalos01
  • javalos01
ok so you know that the probablilty of rolling two is 1/6 right
javalos01
  • javalos01
or am i wrong
anonymous
  • anonymous
Yes, that is correct
javalos01
  • javalos01
well it is confusing but what is your best guess
javalos01
  • javalos01
we know all of them have a probibility of 1/6 so what u do with the 0.4 is divide or multiply
anonymous
  • anonymous
Multiply?
javalos01
  • javalos01
yes correct
javalos01
  • javalos01
and the equation is
javalos01
  • javalos01
0.4 *6 correct
anonymous
  • anonymous
I thought you said multiply. So wouldn't it be 0.4 x 1/6?
javalos01
  • javalos01
the * is the multivly sign
javalos01
  • javalos01
and the / is division
javalos01
  • javalos01
so after you multiply
javalos01
  • javalos01
u get ??
anonymous
  • anonymous
2.4?
javalos01
  • javalos01
correct
javalos01
  • javalos01
and thats your answer 2.4 you get it
anonymous
  • anonymous
Where did the 6 come from though? I thought we were using 1/6. So wouldn't 0.4 x (1/6)= .0667?
javalos01
  • javalos01
ik
javalos01
  • javalos01
but we have to multiply th ewhole number and then
anonymous
  • anonymous
I thought probability was supposed to be between 0 and 1
javalos01
  • javalos01
@Rushwr
javalos01
  • javalos01
no its one through 6
javalos01
  • javalos01
so if yyou peice it all together 0.4x6=2.4 And that peices it all together
javalos01
  • javalos01
u get it
javalos01
  • javalos01
maybe you can help him understand rushwer
Rushwr
  • Rushwr
Soo basically what u have to know is when u add all the probabilities they should be equal to 1
javalos01
  • javalos01
yes they do 1/6+1/6 ect.
javalos01
  • javalos01
and youll get 1 once you add them all and thank you so much rushwer for your help
javalos01
  • javalos01
i really appreciate it
Rushwr
  • Rushwr
P1 = probability of rolling 1 P2 = probability of rolling 2 P3 = probability of rolling 3 P4= probability of rolling 4 P5= probability of rolling 5 P6 = Probability of rolling 6 P1+P2+P3+P4+P5+P6 = 1
javalos01
  • javalos01
yea thats what i meant too thats what i was trying to help him get in my equation
Rushwr
  • Rushwr
Except for P6 others are same right? so we can say P1=P2=P3=P4=P5 so instead of P1+P2+P3+P4+P5 we can right 5P1 right?
javalos01
  • javalos01
yea
javalos01
  • javalos01
So do you get it now
javalos01
  • javalos01
@tennis96
Rushwr
  • Rushwr
so 5P1 + P6 = 1 We know P6 = 0.4 So 5P1 = 1-0.4 = 0.6 So P1 = 0.6/5 = 0.12 Except for the probability of rolling 6 other probabilities are 0.12
javalos01
  • javalos01
yea correct
anonymous
  • anonymous
But it says all other sides are equally likely. So that means the probability of rolling a 6 is 0.4. And the probability or rolling either a 1,2,3,4, or 5 is 0.4 as well?
Rushwr
  • Rushwr
That is ; P1= 0.12 P2 = 0.12 P3 =0.12 P4 = 0.12 P5 = 0.12 P6 = 0.4 Now add up the probabilities of the even numbers ! That is P2+P4+P6 Then u get the probability of rolling an even number
javalos01
  • javalos01
yea do you get it now tennis
anonymous
  • anonymous
OHH it just clicked
anonymous
  • anonymous
So all the other trials would have to be equal to 0.6 right? so 0.6/ 5= .12
javalos01
  • javalos01
yes thank you so much for letting us help you
javalos01
  • javalos01
i have a great time personaly helping students find there way
anonymous
  • anonymous
Thank you!
javalos01
  • javalos01
your wekcome thank you or letting us help you
Rushwr
  • Rushwr
"The probability of rolling a 6 is 0.4 and all other sides are equally likely" this what the question said. I think u took it wrong !!! This means probability of rolling 6 is 0.4 and all the others equal. But this doesn't mean all the other sides are equal to 0.4 . Simply it says the probability of rolling 6 is different than the others
anonymous
  • anonymous
Yeah I did haha! thanks for pointing this out to me Rusher!
Rushwr
  • Rushwr
Rushwr* lol no problem !!!!
javalos01
  • javalos01
can i have a medal plzz
javalos01
  • javalos01
i helped too lol
javalos01
  • javalos01
im just kidding i dont care about medals i just care about helping other students
Rushwr
  • Rushwr
okai Done ! I gave u a medal !!!!!
javalos01
  • javalos01
thnx
Rushwr
  • Rushwr
I hope u got the answer right 11 @tennis96 Can I know ur answer before I leave this ?
Rushwr
  • Rushwr
No problem :)
javalos01
  • javalos01
yea thats what i asked too
anonymous
  • anonymous
I'm guessing I add all the probabilities together. P(2)= .12 P(4)=.12 P(6)= .4. Added together is this ..
anonymous
  • anonymous
.64?
Rushwr
  • Rushwr
Correct !!!!
anonymous
  • anonymous
Okay perfect thank you :)
javalos01
  • javalos01
yes you are correct
Rushwr
  • Rushwr
Anytym :)
javalos01
  • javalos01
thank you for everything

Looking for something else?

Not the answer you are looking for? Search for more explanations.