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anonymous
 one year ago
WILL GIVE MEDAL IF YOU TEACH ME HOW
A charity is selling raffle tickets at $10 apiece. Ten thirdplace winners will be drawn, each winning $20. Five secondplace winners will be drawn, each winning $50. Finally, one grand prize of $200 will be awarded. If 100 tickets are sold, what is the expected value of one ticket?
anonymous
 one year ago
WILL GIVE MEDAL IF YOU TEACH ME HOW A charity is selling raffle tickets at $10 apiece. Ten thirdplace winners will be drawn, each winning $20. Five secondplace winners will be drawn, each winning $50. Finally, one grand prize of $200 will be awarded. If 100 tickets are sold, what is the expected value of one ticket?

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misty1212
 one year ago
Best ResponseYou've already chosen the best response.4there is an easy way to do this, and a probability way lets do it the easy way first

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright. I'd also like to know how to do it the probability way. I have a whole test on these types of questions

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4ok we can do it both ways, they are actually the same, just look different

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4first buy up all 100 tickets at $10 each how much do you spend total?

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4right and since you bought all the tickets, you win all the money how much do you win total? (take your time on this one)

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4ok so you spent $1000, got back $650 how much did you lose?

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4exactly now averaged over the (lol)

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4now averaged over the 100 tickets you bough you lost \[\frac{350}{100}=3.50\] expected value is \(\$3.50\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ah alright. that makes a lot of sense. it just wasnt explained very well.

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4would you like to do it the probability way?

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4you can see that it is the same, just looks different

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the multiple choice answers are: A. –$10.00 B. $6.50 C. $10.00 D. $216.67

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i'll check my adding again

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4no i checked it is right

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hmmm. I'm not sure. what you said seems to make sense to me

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4i guarantee you what i said is correct

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4maybe they are not counting the amount you lose

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thats what im thinking

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that would be B, right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if they're not counting the amount lost

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4and saying that the expected value is \(\$6.50\) which means if you spent \($10\) you lose \(\$3.50\) but that is not a true expected value

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4the expected value is the amount you win times the probability you win it, added up, but you should also include the amount you lose as a negative

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know. that seems weird to me

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yours makes more sense realistically

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4because it is wrong you would "expect" the expected value of a lottery ticket to be negative, otherwise the charity would not make any money

misty1212
 one year ago
Best ResponseYou've already chosen the best response.43.50 to you , +3.50 per ticket to them tell your teacher!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I would if i had a teacher right now. Im on the last test of my online geometry course and they didnt explain it very well at all. maybe because they have no idea what they're talking about lol

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4if this is geometry i am an old man

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well i can hope that 6.50 is probably the right answer

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4yeah it is the only one of the bunch that makes sense, go with that one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know. I was thinking the same thing

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0welcome to South Dakota state standards

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well thanks for the help!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if you have the time could i get help with one more? it seems to be a little different. if not thats okay

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0In a certain board game, a standard number cube is rolled to determine the number of spaces a player gets to move. Use the table above to determine the expected value of the number of spaces a player moves. Round the answer to the nearest tenth.

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4unless it is really geometry, because i am clueless about that

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0posting the table in just a sec

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4one "number cube" aka one die?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this online course was so poorly designed its not even funny

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4each outcome has probability \(\frac{1}{6}\) so really all you have do to is add and divide by 6

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4\[\huge \frac{6+3+333+1}{6}\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4aka \[\frac{7}{6}\] and please don't tell me that is not an answer choice !!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got 1.16666.... which rounds to 1.2

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4ok i they love decimals pick that one who writes this gibberish?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No clue. A lot of the time they have trouble formulating a sentence. Sometimes major grammatical errors. It's a pain in the rear

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4FLVS or some other criminal enterprise?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Edgenuity, aka education2020, surprisingly

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0There were so many cases where they'd say something like an angle measuring 135º or something, and then the picture of it looking like a 45º angle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Obviously looking acute but they swear it measures over 90º

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4imagine remember that these questions are written mostly by middle school math teachers or (mainly) starving graduate students living on ramen noodles and beer. they are rarely checked for accuracy

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Probably. I've had to retake tests before simply because the right answer just wasn't in the answer choices. I had to get an actual teacher from my highschool to verify that I was right and the grading system was wrong.

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4nothing like an "actual teacher" lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorta. She prefers "Librarian"

misty1212
 one year ago
Best ResponseYou've already chosen the best response.4you got more or is that it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well there is another but I think I got it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this is getting ridiculous
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