Question

Help with probability outcomes?!

Answer 1

Roger is playing a board game and rolls two number cubes. Let A = {the sum of the number cubes is even}, and let B = {the sum of the number cubes is divisible by 5}. List the outcomes in A ∪ B.

{ }

{10}

{2, 4, 6, 8, 10, 12}

{2, 4, 5, 6, 8, 10, 12}

Answer 2

those are the answer keys?

Answer 3

I think it would Be C :3

Answer 4

How do you know?

Answer 5

Let a the sum of the numbers of cubes is even :3

Answer 6

I randomly guessed & picked that one, but I wanna make sure it's right :)

Answer 7

ahhh, truuue...

Answer 8

I have like two more questions can you help me?

Answer 9

So its either B OR C :3 cuz 10 is divisible by 5 :3

Answer 10

sure

Answer 11

OKAY WAIT though.

Answer 12

I need someone to explain to me which it would be.

Answer 13

Its B because C only 1 answer is divisible by 5 :3

Answer 14

In order to answer the question properly, you have to know the difference between union and intersection

Answer 15

Hero it says your a moderator o.o

Answer 16

A = {2, 4, 6, 8, 10, 12}
B = {5 , 10}

Answer 17

What is the difference?

Answer 18

Mhm mhm soooo the answer will be B

Answer 19

hmmmmm...

Answer 20

The difference is A Union B would include all of the elements of each.
A intersection B only includes the elements that occur in both A and B

Answer 21

its like finding the Least common and greatest common number

Answer 22

@victorhernandez, why is it that you have to defend an answer to which you do not know if it is correct or not?

Answer 23

Instead of saying, "the answer is B" how about come up with a logical explanation. The explanation that you have would be more telling than anything else.

Answer 24

@Hero don't judge my methods I just like saying my answer instead of explaining it all >_>

Answer 25

On Open Study, Explanations > Answers

In other words, Explanations hold more value than answers because it shows that you know what you're talking about. Saying "the answer is B" doesn't demonstrate "knowing or understanding".

Answer 26

@victorhernandez, have you consulted the Open Study code of conduct yet? If not, I recommend doing so.
http://openstudy.com/code-of-conduct

Answer 27

:3 mk ill take a look at it :3

Answer 28

Oh, and by the way, the answer is NOT B. It isn't even C.

Answer 29

:3

Answer 30

I chose D...

Answer 31

Thank you for the help :) I have a question that I want you guys to check my answer if that's fine.

Answer 32

A mechanic gives a survey to all of his customers asking them to rate the quality of the service they received. He then keeps track of how many customers return to the shop for additional services during the next six months. Last year, the results showed that of the customers who reported high quality service, 20% returned for additional services. What conclusion can be drawn from this study?

Some customers who rate their service as high quality return for additional services.

Most customers who rate their service as high quality return for additional services.

High quality services cause customers to return for additional services.

Customers who will return for additional services report a high quality of service.

Answer 33

I chose A

Answer 34

Same because it says some and some means a few so it would not be high quality services cause customers to return for addition service because it doesn't state if most or a little and it would be incorrect too because not all high quality service customers return and D is incorrect because it says Customers who will return and last cross t B because Most 20% isn't most Answer I got is A

Answer 35

:)

Answer 36

I have one last question that i've been having trouble with!

Answer 37

throw It at me :3

Answer 38

Carter wants to know if warming up will help runners sprint faster. Thirty track and field athletes volunteered to participate in his study. He randomly assigns 15 athletes to warm-up for 10 minutes. All 30 participants sprint the same distance. She calculates the mean for each group and determines that the mean for the warm-up group was 10.7 seconds and the mean for the other group was 13.2 seconds. To test the difference of means, he re-randomized the data 54 times and the differences are plotted in the dot plot below. What can Carter conclude from his study?

Answer 39

wew

Answer 40

Pleaaase it's my last one! :(

Answer 41

ill try

Answer 42

ehhh im at this type of question :3

Answer 43

@Hero help with this please :3

Answer 44

:/

Answer 45

@madisonvictoriaa, which do you believe is correct and why?

Answer 46

B...but I'm not completely sure

Answer 47

Nevermind! I actually chose C & it was right

Answer 48

Awesome

Answer 49

The first one is incorrect, just took the test and I had put D and that was correct :)