Question

Basic probability problem. but confused xD...
A teacher dropped 8 coins on the table and counted the number of tails to simulate the number of questions a student might guess correctly on a true/false quiz with 8 questions. The dot plot below shows the results of one hundred trials. Based on this data, which number of correct answers is most unlikely?

Answer 1

i think its 6 but when i look it up on openstudy everyone seems to have agreed on 5... pls help

Answer 2

You are misreading the question I believe.

Answer 3

In the question it says "most unlikely" So the answer would be 5. I believe you are reading it as "most likely" where in that case then yes the answer would be 6.

Answer 4

but wouldnt it be unlikely to get every coin flipped on tails? like in number 6

Answer 5

You're misreading the graph though, it is saying that out of 100 trials, 18 of them there were 6 tails out of the 8 coins.

Answer 6

im so confused now :O

Answer 7

The question is asking what number of questions would a student get right on a 8 question true/false test if they were guessing. To find the data they did the experiment with the 8 coins.

Answer 8

The most unlikely amount of answers would be 5 because only 5 coins landed on tails 4 times out of 100.

Answer 9

okay so that is where im confused

Answer 10

can you break down the graph to me? im rlly confused looking at it.

Answer 11

Okay I'll do my best to try and explain it.

Answer 12

wait so the 0 -1-2-3-4-5-6-7-8 is the coins? or the true/false questions?

Answer 13

4 times 0 coins landed on tails
14 times 1 coin landed on tails
13 times 2 coins landed on tails
10 times 3 coins landed on tails
8 times 4 coins landed on tails
4 times 5 coins landed on tails
18 times 6 coins landed on tails
16 times 7 coins landed on tails
13 times 8 coins landed on tails

Answer 14

ok

Answer 15

This is out of 100 times they did the trial.
The question wants you to find the most unlikely number of questions the students will guess correctly.

Answer 16

I don't like this question because there are two answers. 0 and 5 are both viable answers. Ask your teacher about this question when you can.

Answer 17

the only thing is 0 doesnt show up on the multiple choice

Answer 18

i think i sort of understand it now

Answer 19

I would go with 5. It's the only answer you can get from it.

Answer 20

so basically it should have been way more than only 4 times that 5 coins landed on tails

Answer 21

how come the 14 times only 1 coin landed on tails isnt unlikely? wouldnt the chance of that happening be slim to none?

Answer 22

It doesn't matter about logic in the question. It just gives you a graph to read. To show you can read graphs. You're bringing logic into a simple question and it is making you over think it.

Answer 23

i know... i have a bad habit of overthinking things.

Answer 24

It's not a bad thing. You just need help to steer you the right way when you need it.

Answer 25

thanks for the help! i can better understand itnow

Answer 26

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