OpenStudy (anonymous):

help????

2 years ago
OpenStudy (anonymous):

Find the experimental probability. Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A.2/5 B.3/5 C.2/3 D.3/7

2 years ago
OpenStudy (anonymous):

@snazzychazzy @mathstudent55

2 years ago
OpenStudy (misty1212):

HI!!

2 years ago
OpenStudy (anonymous):

hello can you help me understand this plaese

2 years ago
OpenStudy (misty1212):

50 draws, 30 black marbles

2 years ago
OpenStudy (misty1212):

the ratio is $$\frac{30}{50}$$ which reduces

2 years ago
OpenStudy (misty1212):

and no, it is not C

2 years ago
OpenStudy (anonymous):

nvm then

2 years ago
OpenStudy (anonymous):

and the simplify it

2 years ago
OpenStudy (misty1212):

BEWARE of answers with no explanation they are often wrong

2 years ago
OpenStudy (anonymous):

*and then

2 years ago
OpenStudy (anonymous):

B then

2 years ago
OpenStudy (anonymous):

sorry snazzy i like to figure it out

2 years ago
OpenStudy (anonymous):

30 divide by 50 equals 0.6 switch that to a fraction is 6/10 and simplify it to 3/5

2 years ago
OpenStudy (anonymous):

But that is ur answer :)

2 years ago
OpenStudy (anonymous):

thank you :3

2 years ago
OpenStudy (anonymous):

No problem :)

2 years ago
OpenStudy (anonymous):

And thank u for the medal working on getting human calculator :)

2 years ago
OpenStudy (anonymous):

i have 46 medals :D

2 years ago
OpenStudy (anonymous):

2 years ago
OpenStudy (anonymous):

can you help me on 4 more please

2 years ago
OpenStudy (anonymous):

2 years ago
OpenStudy (anonymous):

Also post a new question if ur are finished with this question

2 years ago
OpenStudy (anonymous):

Brahim completed 18 free throws and missed 12. Using experimental probability, how many free throws is he predicted to complete in the next 100 tries? A. 6 B. 36 C. 48 D. 60

2 years ago
OpenStudy (anonymous):

i think it is 60

2 years ago
OpenStudy (anonymous):

I see ur reason but i will see if u are correct

2 years ago
OpenStudy (anonymous):

well first cross out A because if the free throws increases they baskets he makes increases as well

2 years ago
OpenStudy (anonymous):

true

2 years ago
OpenStudy (anonymous):

i am thinking B for a reason of that 100/18 equals 6 (rounded) but if u do 6*6 since 6 was the number of baskets he made before times it by how many he is doing know i believe it will be 36 :)

2 years ago
OpenStudy (anonymous):

ok i will try it and at the end of this quiz i will tell you

2 years ago
OpenStudy (anonymous):

Ok

2 years ago
OpenStudy (anonymous):

The table shows the results of a spinner with four colored sections. Use the table to answer the question. The spinner is spun 50 more times. Which is the best prediction for the number of times the spinner will stop on white? A. 5 B. 10 C. 25 D. 40

2 years ago
OpenStudy (anonymous): 2 years ago
OpenStudy (anonymous):

@snazzychazzy

2 years ago
OpenStudy (anonymous):

i know i is here

2 years ago
OpenStudy (anonymous):

But i am not sure about this since i dont know how many times it was spun the first time :/

2 years ago
OpenStudy (anonymous):

I would go with C because you know that their is a big white space on that spinner from the table earlier so you know that white will be the most landed on then any other color :)

2 years ago
OpenStudy (anonymous):

sorry @snazzychazzy i had to go eat lunch. You still there??????

2 years ago
OpenStudy (anonymous):

yesh

2 years ago
OpenStudy (anonymous):

I AM LVL 61 YESH YESH YESH

2 years ago
OpenStudy (anonymous):

AWESOME!!!!!!

2 years ago
OpenStudy (anonymous):

i feel so amazing right now

2 years ago
OpenStudy (anonymous):

lol i bet

2 years ago
OpenStudy (anonymous):

i need two more medals D:

2 years ago
OpenStudy (anonymous):

so are you for sure its c

2 years ago
OpenStudy (anonymous):

lol if i can give you more medals i would

2 years ago
OpenStudy (anonymous):

Yes also because you can tell that the white is going to get the most but so will other colors but i wont get so many times to 40 so the other answers would be to low so i think it is C

2 years ago
OpenStudy (anonymous):

what i am trying to say is it wont get so low and it wont get to high to the best estimate (also the only answers) would be 25

2 years ago
OpenStudy (anonymous):

ok thank you

2 years ago
OpenStudy (anonymous):

No problem :)

2 years ago
OpenStudy (anonymous):

$$\Huge\color{purple}{UR~WELCOME}$$

2 years ago
OpenStudy (anonymous):

lol

2 years ago
OpenStudy (anonymous):

The table shows the results of drawing letter tiles from a bag. What is the probability that the next tile drawn will have the letter C on it? http://static.k12.com/calms_media/media/1416500_1417000/1416595/1/5ed9dcef8dd7dcfdb451e19005fb94db10bbcd87/FGA_130913_160911.jpg

2 years ago
OpenStudy (anonymous):

Is this a fill in da blank or multiple choice??

2 years ago
OpenStudy (anonymous):

no i just have to type in the fractions

2 years ago
OpenStudy (anonymous):

Ok

2 years ago
OpenStudy (anonymous):

a.1/18 b.6/25 c.9/25 d.18/25

2 years ago
OpenStudy (anonymous):

C so what your gonna do is take all those numbers and plus them and then take 18/50 and take it and make it a 9/25 :)

2 years ago
OpenStudy (anonymous):

and this i am 1000000000000000000000000000000000% sure

2 years ago
OpenStudy (anonymous):

ok

2 years ago
OpenStudy (anonymous):

$$\Huge\mathbb{Any~More?}$$

2 years ago
OpenStudy (anonymous):

A bag contains 45 marbles of various colors. Lena draws 48 times, each time replacing the marble before drawing again. She gets a total of 16 red marbles. Which is best prediction of how many red marbles are in the bag? A. 3 B. 13 C. 15 D. 16

2 years ago
OpenStudy (anonymous):

yup

2 years ago
OpenStudy (anonymous):

A what i did was took 48 and divided it by 16 to get three

2 years ago
OpenStudy (anonymous):

2 years ago
OpenStudy (anonymous):

and i got a 60 on my test

2 years ago
OpenStudy (anonymous):

Oh no

2 years ago
OpenStudy (anonymous):

wait are u on k12??

2 years ago
OpenStudy (anonymous):

but which ones did u miss?

2 years ago
OpenStudy (anonymous):

#2 #5

2 years ago
OpenStudy (anonymous):

last one and second :(

2 years ago
OpenStudy (anonymous):

2 years ago
OpenStudy (anonymous):

#2 60

2 years ago
OpenStudy (anonymous):

Oh u had that right :(

2 years ago
OpenStudy (anonymous):

#5 15

2 years ago
OpenStudy (anonymous):

it ok i can take it 2 more times

2 years ago
OpenStudy (anonymous):

:)

2 years ago
OpenStudy (anonymous):

2 years ago
OpenStudy (anonymous):

you probably post a new question

2 years ago
OpenStudy (anonymous):

yes

2 years ago
OpenStudy (anonymous):

So that way if anyone has different ideas about it they can help too

2 years ago
OpenStudy (anonymous):

yup and lets get started

2 years ago
OpenStudy (anonymous):

Find the experimental probability. Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A. B. C. D.

2 years ago
OpenStudy (anonymous):

o ooops

2 years ago
OpenStudy (anonymous):

a.2/5 b.3/5 c.2/3 d.3/7

2 years ago
OpenStudy (anonymous):

WAIT THE ANSWERS ARE THE SAME I THINK LOOK AT THE FIRST QUESTION

2 years ago
OpenStudy (anonymous):

Sheila drew single marbles from a bag, recorded the outcome, and replaced the marble. In 50 draws, Sheila drew 20 white marbles and 30 black marbles. What is the experimental probability that the next marble will be black? A.2/5 B.3/5 C.2/3 D.3/7

2 years ago
OpenStudy (anonymous):

yesh they are

2 years ago
OpenStudy (anonymous):

o they shoud not be

2 years ago
OpenStudy (anonymous):

hold on

2 years ago
OpenStudy (anonymous):

ahh they are wooooow that never happen befor

2 years ago
OpenStudy (anonymous):

well ok awesome :3

2 years ago
OpenStudy (anonymous):

that should be awesome for u

2 years ago
OpenStudy (anonymous):

lol i think this next one is different

2 years ago
OpenStudy (anonymous):

Three out of 200 machine parts were found to be defective. About how many parts would be expected to be defective out of 2500 parts? A. 15 B. 30 C. 38 D. 67

2 years ago
OpenStudy (anonymous):

yup different

2 years ago
OpenStudy (anonymous):

yeah its different

2 years ago