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In interval estimation, the t distribution is applicable only when

a) the population has a mean of less than 30.

b) the sample standard deviation (s) is given instead of the population standard deviation (6).

c) the variance of the population is known.

d) the standard deviation of the population is known.

e) we will always use the t distribution.

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Jarrod Robel
Jarrod RobelLv2
18 Mar 2020
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