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anonymous
 one year ago
A random number generator picks a number from 1 to 9 in a uniform manner.
Find the 90th percentile. (Round your answer to one decimal place.)
My set up is (k9)(1/8)=0.90
why is this wrong
anonymous
 one year ago
A random number generator picks a number from 1 to 9 in a uniform manner. Find the 90th percentile. (Round your answer to one decimal place.) My set up is (k9)(1/8)=0.90 why is this wrong

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nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1why did you use that "set up?"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0in my book it says to use it

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1first, what do you know about percentile rank in your own words

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0isn't it like how many # were chosen...90%?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1so you're being asked for the number that ranks 90th percentile

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1how would you look for that number

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that's where I am getting confused because my set up is wrong? would it be like 90%..of 9

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1let us list your numbers

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1is this how you have it set up? 1, 2, 3, 4, 5, 6, 7, 8, 9

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1there are two ways to get percentile ranks one is: \(\sf \huge \frac{B\times (0.5E)}{n} \times 100 \) B: scores below x E: number of scores equal x n: total number the other is: \(\sf \huge \frac{B}{n} \times 100 \)

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1if you're going to use the second one, the set up should be \(\sf \large \frac{B}{9} \times 100 = 90 \) remember that your B will be lower than the actual score you're looking for, but let us focus on properly solving for B first

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I thought it ment to keep the .1

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1round off is the same as estimation and you need to learn about place values.

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.19.1 rounded off to 1 decimal means you focus on the first decimal if it is between 04 then it becomes 0 if it is between 59 then you add 1 to the number that preceded it 9.1 = 9 9.5 = 10 9.67 = 10 etcetera etcetera

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1let us check if our answer makes sense http://www.wolframalpha.com/input/?i=8%2F9

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I understand that, but the question says "Round your answer to one decimal place" so therefore the answer would be like "9.4" keeping the 4

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.18 out 9 makes almost 90%

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0when I practice another problem with numbers 29 and asking for the 80th percentile, the answer is 7.6 ??

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1you're right you keep it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so youre saying when it is smaller than .4 it is rounded to 0

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1but 1, 2, 3, 4, 5, 6, 7, 8, 9 tell me where is 8.1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so you're saying the answer is 8

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1in scores 1  9 and if they are just 1, 2 .... 9 then yes unless someone actually has a score of 8.1 then it is 8.1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so I tried 8.1 and 8 and it is saying it is wrong

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1how about the first formula

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the one that I used? nope

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1I made a typo \(\huge \frac{(B + 0.5E )}{n} \times 100 \)

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1so 8.1 and 8.0 are wrong huh?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1did you put 8.0 with point?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1try 8.0 because of the 10th place value

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait but I only have one try left so I would like to be really sure!

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1I don't know what you just did in the end, kropot but I do want to know why 8.2 because I want to learn if there's any other methods of solving this.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am really not sure. They give me an example of "random number generator picks a number from 2 to 9 in a uniform manner. Find the 80th percentile(Round your answer to one decimal place . and the answer is 7.6 I am trying to work backwards from the answer but I still do not know

dan815
 one year ago
Best ResponseYou've already chosen the best response.2using same method, (k1)/(91)=0.9 k=?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you so much for this explanation!!!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what was the equation you used tho?

dan815
 one year ago
Best ResponseYou've already chosen the best response.2i looked at the example they gave you

dan815
 one year ago
Best ResponseYou've already chosen the best response.2basically what they are doing is

dan815
 one year ago
Best ResponseYou've already chosen the best response.2and they gave you this example dw:1436853055768:dw
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