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Which table should be used to determine a confidence interval on the mean when standard deviation is NOT known and the sample size is 10?
Suggested Answer: B
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16 comments · newest first
NA
Nan
11 months ago
It's B for sure, trust the t-table!
NG
Ngoc
11 months ago
I thought it was B too, but why not z for small samples?
RA
Raymon
11 months ago
Wait, are we sure it's not A? I thought z was for larger samples.
HI
Hillary
11 months ago
Agreed, t-distribution is the way to go here!
EL
Eladia
12 months ago
Definitely B, you use the t-table when the standard deviation is unknown.
PE
Pearlene
12 months ago
Definitely t-table for this question! The sample size is under 30, and we don't know the standard deviation.
LU
Luis
12 months ago
I’m a bit uncertain about this one. I thought we might use the z-table for larger samples, but 10 seems too small for that.
MA
Magdalene
1 year ago
I remember practicing a similar question, and I believe the answer is B, the t-table, since the sample size is small.
BL
Blair
1 year ago
I think we use the t-table when the standard deviation is unknown, but I'm not completely sure.
RE
Rebbeca
1 year ago
I'm leaning towards the t-table, but I want to double-check my notes to make sure I'm not missing anything important.
PA
Paola
1 year ago
The key here is that the standard deviation is unknown and the sample size is 10. That means we should use the t-table to find the confidence interval.
NO
Nobuko
1 year ago
Hmm, I'm a bit confused. I thought we used the z-table when the standard deviation is unknown, but I'm not sure if that applies when the sample size is only 10.
TA
Tamra
1 year ago
I'm pretty sure we use the t-table for this since the sample size is small and the standard deviation is unknown.
AL
Alton
1 year ago
I'm a little confused by the wording of this question. Is it asking specifically about determining participants, or is it broader than that? I'll have to re-read it a few times to make sure I understand what they're looking for.
IS
Isreal
1 year ago
Alright, time to put on my network admin hat. I'm going to carefully review each option and think through the potential causes. Methodical troubleshooting is key here.
KA
Katina
1 year ago
Using WS-Secure-Conversation sounds familiar; maybe that's the way to go? If I recall, it involves session keys that could reduce the burden on the CA.