no t test is similar to z test because t test ie used for unknown observation and z is for the medicne
Chat with our AI personalities
If the Z Score of a test is equal to zero then the raw score of the test is equal to the mean. Z Score = (Raw Score - Mean Score) / Standard Deviation
Because under the null hypothesis of no difference, the appropriate test statistic can be shown to have a t-distribution with the relevant degrees of freedom. So you use the t-test to see how well the observed test statistic fits in with a t-distribution.
In order to know the z-score, given a test score, you must also know the mean and the standard deviation. Please restate the question.
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.
4 Time zones in the 48 states