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anonymous
 one year ago
Statistics Algebra 2 help !
anonymous
 one year ago
Statistics Algebra 2 help !

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The grades on the last science exam had a mean of 89%. Assume the population of grades on science exams is known to be distributed normally, with a standard deviation of 14%. Approximately what percent of students earn a score between 75% and 89%?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Help please @jim_thompson5910 @amistre64 @Mertsj @SolomonZelman @iGreen @jdoe0001 @Nnesha @e.mccormick @Loser66 @Luigi0210 @ash2326 @surjithayer @KyanTheDoodle @oldrin.bataku @JoannaBlackwelder @Lady.Liv1776 ???

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2hmm, id have to know what your material has covered so far

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2and what you have to work the problem with

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2it feels to me like an empirical rule approximation tho ...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it is indeed, but im not sure how to use it

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2well, determine how many deviations are between the mean and your end points

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2and what is our left end point?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0with a standard deviation of 14%

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2so, the difference between them is: what is 8975?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2which is exactly 1 standard deviation to the left of the mean. right?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2if we calculate the same with the other end point .. well, 89 to 89 is a difference of 0, so no standard deviations are to the right of the mean. what are your thoughts?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I didnt get it, can you elaborate more?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2the only thing left to elaborate is what does the empirical rule state? it may be called something else in your material tho.

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2and do we have options to choose from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.068% will fall within the first standard deviation, 95%, the first two and 99.7 first three

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the options are: 38.5% 15.7% 50% 34.1%

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2thats the rule yes, but it is better stated: within + 1sd from the mean falls 68% of the data. 68/2 = 34 so 34% to the left (1 sd), and 34% to the right (+1 sd) we know we are 1sd to the left, and 0 to the right ... what does that tell us?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2dw:1437697237025:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm lost on this....

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2it as plain as i can make it, you will have to tell me where it is losing you at.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0"within + 1sd from the mean falls 68% of the data. 68/2 = 34 so 34% to the left (1 sd), and 34% to the right (+1 sd) we know we are 1sd to the left, and 0 to the right ... what does that tell us?"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I dont know what "that tell us"

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2we determined how many standard deviations we are to the left of the mean, didnt we? 8975 = ??

amistre64
 one year ago
Best ResponseYou've already chosen the best response.214 is the difference between the mean and the endpoint, and our standard deviation has a length of 14. what is 14/14?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2so we are 1 sd to the left of the mean with that calculation. using the rule that you stated, or rather that i stated better: within + 1sd from the mean falls 68% of the data. 68/2 = 34 so 34% to the left (1 sd), and 34% to the right (+1 sd) we know we are 1sd to the left ... which gives us a value of ????

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh ok I think I get it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer would be 34% of the students will get between 75 and 89

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2we are 0 to the right of the mean so there is nothing to concern ourselves with over on that side ... so all in all, what would you say the answer chould be?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.2thats what I would go with as well :)
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