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When you don't have the population standard deviation, but do have the sample standard deviation. The Z score will be better to do as long as it is possible to do it.
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∙ 13y ago
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What is safety t score?
Because t-score isn't as accurate as z-score, you should use 40 as a safety sample size, rather than 30 as you would for a z-score.
What is the p value of a test statistic of 1.369?
The answer depends on what the test statistic is: a t-statistic, z-score, chi square of something else.
What is the difference between z-score and t-score?
T-scores and z-scores measure the deviation from normal. The normal for T-score is 50 with standard deviation of 10. if the score on t-score is more than 50, it means that the person scored above normal (average), and vise versa. The normal for Z-score is 0. If Z-score is above 0, then it means that person scored above normal (average), and vise versa.
Why would you use a z test rather than a t test?
When the sample size is greater than 30
What is a t-test?
a t test is used inplace of a z-test when the population standard deviation is unknown.
How is T-score related to stiffness index in bone mineral density test?
The T-score is related to the Stiffness Index, because the Index is used to determine the T-score. This is an expression of structure, strength, and density.
What is safety t score?
Because t-score isn't as accurate as z-score, you should use 40 as a safety sample size, rather than 30 as you would for a z-score.
What do you do if none of the conditions of using a z-score or the conditions for using a t-score are met?
If we are testing a hypothesis about the population mean , if none of the conditions of using a z-score or the conditions for using a t-score are met, we may use a proper non-parametric test.
What is the p value of a test statistic of 1.369?
The answer depends on what the test statistic is: a t-statistic, z-score, chi square of something else.
What is the difference between z-score and t-score?
T-scores and z-scores measure the deviation from normal. The normal for T-score is 50 with standard deviation of 10. if the score on t-score is more than 50, it means that the person scored above normal (average), and vise versa. The normal for Z-score is 0. If Z-score is above 0, then it means that person scored above normal (average), and vise versa.
What has the author T J Reddy written?
T. J. Reddy has written: 'Less than a score, but a point'
Is at and t better than sprint?
Sprint has better pricing, at&t has better customer service, and more coverage.
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. It is said to have been developed by the head of quality control at the Guinness Brewery in Ireland.
Why would you use a z test rather than a t test?
When the sample size is greater than 30
Why would you use a t test rather than a z test?
When the sample size is greater than 30
Is a paired t-test more powerful than a a test between independent samples a A paired t- test is more powerful because it utilizes information b an independent sample t0-te?
paired t-test is more powerful because it utilizes information
How do I tell if a T-test is significant with an alpha of 05 and if you already have significance values?
If you already have your p-value, compare it with 0.05. If the p-value is less than an alpha of 0.05, the t-test is significant. If it is above 0.05, the t-test is not significant.
