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Mathematics 30 Online
OpenStudy (anonymous):

.

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

I had the same answer on one of my test. If i may ask where did u get this answer from ?

OpenStudy (anonymous):

flvs. these are my choices: 0.045254 0.07636 0.054746 0.95254

OpenStudy (anonymous):

do u know the answer @welly ?

OpenStudy (anonymous):

hmmm trying to figure this one out

OpenStudy (amistre64):

its pretty simple, what methods are avaliable to you?

OpenStudy (anonymous):

drawing that curve for the mean and SD? Don't know how to find the answer that way though...

OpenStudy (amistre64):

hmmm, you have to relate this to a z score and use a table if you dont have a stats calculator

OpenStudy (amistre64):

the zscore simply tells us how many standard deviations a number is from the mean so, how many sds fit between 5 and 6?

OpenStudy (anonymous):

1?

OpenStudy (amistre64):

6-5 = 1 so this is the distance that needs to be covered. the sd is equal to .7 how do we determine how many times .7 goes into 1?

OpenStudy (anonymous):

um, by dividing?

OpenStudy (amistre64):

teh z = 1/,7 or simply 1.43 now we need a zscore table to look up that result

OpenStudy (anonymous):

ok, but I don''t have one.:( What would that be?

OpenStudy (anonymous):

Ok, I found it, but I really don't know how to look it up on that.!:/

OpenStudy (amistre64):

the table is like a multipication table, but its not multiplication .... it splits the zcore into 2 parts: 1.43 will have 1.4 on the left side, and .03 on top such that you connect the row and column to read the area: |dw:1401919182323:dw|

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