Wednesday
September 2, 2015

# Homework Help: URGENT MATH!!!!!!!

Posted by Gabby on Tuesday, April 16, 2013 at 11:37pm.

1.
There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P(red). Write the probability as a fraction in simplest form, a decimal, and a percent. (1 point)

four over thirty-one, 0.129, 12.9%
four over thirty-five, 0.114, 11.4%
one-seventh, 0.143, 14.3%
three over thirty-five, 0.086, 8.6%

2.
A number cube with the numbers 1 through 6 is rolled. Find P(number is greater than or equal to 3). (1 point)

four-sixths
one-sixth
two-sixths
five-sixths

3.
A multiple-choice question has five possible answers. What are the odds in favor of guessing the right answer? (1 point)

2:3
4:1
1:4
3:2

1)B

OK plz help me i dont understand how to do 2 or 3 and its urgent my parents want it done in 10min. (orthey get angry) yes their strict... but back to the point I told them i dont understand they just yelled at me and said figure it out and GET IT DONe.... so any possible helpers QUICK?!?!?!?
• URGENT MATH!!!!!!! - Reiny, Tuesday, April 16, 2013 at 11:52pm

in #1, are you picking just one? I will assume that
Prob(1 red) = 4/35 = appr .114 which is 11.4%

#2
There are 4 numbers > 3
so prob (>3) = 4/6 = 2/3
(they should have reduced the fractions)

#3
prob of correct guess = 1/5
prob of wrong guess = 4/5
odds in favour of correct guess = (1/5) : (4/5)
= 1 : 4