Answer :
The working of T critical value calculator is explained
What is t test?
t test is the test used if the sample standard deviation is known and population standard deviation is unknown.
t test is used if the sample standard deviation is known and population standard deviation is unknown.
Here, t value is calculated by the formula
[tex]t = \frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]
[tex]\bar{x}[/tex] = mean of the sample
[tex]\mu[/tex] = mean of the population
s = standard deviation of sample
n = Number of samples
Now, with the help of degree of freedom (n - 1) and the level of significance, the critical value of t is to be noted from the t table. Let it be [tex]t_{critical}[/tex]
if the value of t lies between [tex]-t_{critical}[/tex] and [tex]+t_{critical}[/tex] then the null hypothesis is accepted, otherwise the null hypothesis is rejected.
To learn more about t test, refer to the link
https://brainly.com/question/6589776
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