When do you use the t-test instead of the z-test? a When the sample size is larg
ID: 3176875 • Letter: W
Question
When do you use the t-test instead of the z-test?
a
When the sample size is larger than 100.
b
When the original population distribution follows a t distribution instead of a z distribution.
c
When the sample standard deviation is larger than the population standard deviation.
d
When the population standard deviation is not known.
a
When the sample size is larger than 100.
b
When the original population distribution follows a t distribution instead of a z distribution.
c
When the sample standard deviation is larger than the population standard deviation.
d
When the population standard deviation is not known.
Explanation / Answer
When the population standard deviation is not known we are forced to use t-distribution.
d
When the population standard deviation is not known.
d
When the population standard deviation is not known.
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