CNSL 503 Exam Questions Module 5 with 100%
Correct Answers | Latest Version (20245/2026)
Expert Verified
When..population..standard..deviation..is..known,..the..z-
score..is..used,..when..population..standard..deviation..is..unknown,..the..__..is..used..
-..Correct..Answer-t-score
True/False
Since..t-scores..are..centered..normally..around..the..mean..and..form..a..bell-
shaped..curve,..probabilities..can..be..calculated..to..draw..inferences..about..popula
tions...-..Correct..Answer-True
___..determine..how..well..the..t-
distribution..approximates..the..normal..distribution..of..the..z-
scores...To..calculate..for..any..sample..size,..n-1..-..Correct..Answer-
Degrees..of..freedom..(df)
A..t..distribution..approximately..resembles..a..normal..distribution..when..n=___..-
..Correct..Answer-n=12
T-testing..for..a..one..sample..test..is..used..when..__..-..Correct..Answer-
the..population..mean..is..known
In..a..one..sample..test,..state..the..possible..Ho..and..Ha..hypotheses..-
..Correct..Answer-Ho:..
, µ..=..known..population..mean
Ha:..
µ..>..known..population..mean..(right..tailed)
µ..<..known..population..mean..(left..tailed)
µ..≠..equal..known..population..mean..(two..tailed)
How..to..calculate..df..for..one..sample..tests..-..Correct..Answer-n-1
For..t-
testing,..you..compute..___..based..on..a..sample..statistic..rather..than..using..a..stan
dard..deviation..based..on..a..population..parameter..-..Correct..Answer-
standard..error
The..__..is..centered..around..the..mean,..extending..to..the..left..and..to..the..right..to..i
nclude..estimated..standard..error,..sx̄...It..provides..a..range..of..values..that..would..li
kely..contain..the..population..mean..at..a..given..alpha..level...-..Correct..Answer-
confidence..intervals
To..increase..the..range..of..a..confidence..interval,..____..-..Correct..Answer-
decrease..the..significance..level
A..larger..sample..size..___..standard..error..which..reduces..margin..of..error..-
..Correct..Answer-reduces
Correct Answers | Latest Version (20245/2026)
Expert Verified
When..population..standard..deviation..is..known,..the..z-
score..is..used,..when..population..standard..deviation..is..unknown,..the..__..is..used..
-..Correct..Answer-t-score
True/False
Since..t-scores..are..centered..normally..around..the..mean..and..form..a..bell-
shaped..curve,..probabilities..can..be..calculated..to..draw..inferences..about..popula
tions...-..Correct..Answer-True
___..determine..how..well..the..t-
distribution..approximates..the..normal..distribution..of..the..z-
scores...To..calculate..for..any..sample..size,..n-1..-..Correct..Answer-
Degrees..of..freedom..(df)
A..t..distribution..approximately..resembles..a..normal..distribution..when..n=___..-
..Correct..Answer-n=12
T-testing..for..a..one..sample..test..is..used..when..__..-..Correct..Answer-
the..population..mean..is..known
In..a..one..sample..test,..state..the..possible..Ho..and..Ha..hypotheses..-
..Correct..Answer-Ho:..
, µ..=..known..population..mean
Ha:..
µ..>..known..population..mean..(right..tailed)
µ..<..known..population..mean..(left..tailed)
µ..≠..equal..known..population..mean..(two..tailed)
How..to..calculate..df..for..one..sample..tests..-..Correct..Answer-n-1
For..t-
testing,..you..compute..___..based..on..a..sample..statistic..rather..than..using..a..stan
dard..deviation..based..on..a..population..parameter..-..Correct..Answer-
standard..error
The..__..is..centered..around..the..mean,..extending..to..the..left..and..to..the..right..to..i
nclude..estimated..standard..error,..sx̄...It..provides..a..range..of..values..that..would..li
kely..contain..the..population..mean..at..a..given..alpha..level...-..Correct..Answer-
confidence..intervals
To..increase..the..range..of..a..confidence..interval,..____..-..Correct..Answer-
decrease..the..significance..level
A..larger..sample..size..___..standard..error..which..reduces..margin..of..error..-
..Correct..Answer-reduces
