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What is a t-test?
a t test is used inplace of a z-test when the population standard deviation is unknown.
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When to use t-test?
You use the t-test when the population standard deviation is not known and estimated by the sample standard deviation. (1) To test hypothesis about the population mean (2) To test whether the means...
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Why a t-test is conducted?
we conduct a t-test to see if the means of two different populations are statistically different from each other.
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What is the T-Test formula?
t= absolute value of ( sample 1 - sample two) THEN DIVIDED by the (standard error of sample one - standard error of sample 2)
standard error = the standard deviation divided by (square root of the...
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What is the t test used for?
The"t" test, (called the "small 't' test, to distinguish it from the large 'T' test) is a test for deviation from a known norm, using a smaller sample set than the one required by the large T test....