Question

Inferences from Two Samples

Answer 1

Would this be Proportion?

Answer 2

@amistre64 @jim_thompson5910 @jdoe0001 @SolomonZelman

Answer 3

what would you define as the proportions?

Answer 4

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?

Answer 5

Basically, I'm asking if it would be A(to the first question).

Answer 6

No, I didn't think it would be.

Answer 7

So A is out..

Answer 8

i believe A is out yes. average and mean tend to be synonyms

Answer 9

Yep

Answer 10

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

Answer 11

i dont know what a paired difference is ... so my best guess is that A is not it :)

Answer 12

Well, to do C I would also need the Standard Deviation

Answer 13

pop sds are given .. so B is plausible

Answer 14

T test uses the sample deviations

Answer 15

can you define what a paired differences is?

Answer 16

Well, if we do Paired Differences, we need Data..so I think that's out too.

Answer 17

Like a table of values for each of the samples..

Answer 18

Which is not given..so D should be out.

Answer 19

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

Answer 20

i think paired data tends to use the same sample group, and compares it like a before and after

Answer 21

yeah ..

Answer 22

so all others being equal ... i know what id guess at :)

Answer 23

Ah..okay, thanks a bunch guys! :)

Answer 24

good luck ;)