iGreen
  • iGreen
Inferences from Two Samples
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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iGreen
  • iGreen
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iGreen
  • iGreen
Would this be Proportion?
iGreen
  • iGreen
@amistre64 @jim_thompson5910 @jdoe0001 @SolomonZelman

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amistre64
  • amistre64
what would you define as the proportions?
amistre64
  • amistre64
a proportion is something like: this many, out of a sample of this many ... do you see anything in the information that tells us that sort of detail?
iGreen
  • iGreen
Basically, I'm asking if it would be A(to the first question).
iGreen
  • iGreen
No, I didn't think it would be.
iGreen
  • iGreen
So A is out..
amistre64
  • amistre64
i believe A is out yes. average and mean tend to be synonyms
iGreen
  • iGreen
Yep
amistre64
  • amistre64
if out of 64 students, the average score was 82 ... this is not telling us how many of the students got an 82 .. x/64 would be a proportion setup
amistre64
  • amistre64
i dont know what a paired difference is ... so my best guess is that A is not it :)
iGreen
  • iGreen
Well, to do C I would also need the Standard Deviation
amistre64
  • amistre64
pop sds are given .. so B is plausible
amistre64
  • amistre64
T test uses the sample deviations
amistre64
  • amistre64
can you define what a paired differences is?
iGreen
  • iGreen
Well, if we do Paired Differences, we need Data..so I think that's out too.
iGreen
  • iGreen
Like a table of values for each of the samples..
iGreen
  • iGreen
Which is not given..so D should be out.
jim_thompson5910
  • jim_thompson5910
paired differences would only be used if both sample sizes are the same and the samples are dependent (connected) somehow eg: before and after tests
amistre64
  • amistre64
i think paired data tends to use the same sample group, and compares it like a before and after
amistre64
  • amistre64
yeah ..
amistre64
  • amistre64
so all others being equal ... i know what id guess at :)
iGreen
  • iGreen
Ah..okay, thanks a bunch guys! :)
amistre64
  • amistre64
good luck ;)

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