Question

Grant has a sample of 36 rats in his study. If he conducts a single-sample t test, what is the value of the degrees of freedom?

37

6

36

35

Answer 1

The degrees of freedom if we are conducting a test about the true mean are given by:

`df =n-1`

And replacing the info given we got:

`df = 36-1=35`

And the best option would be:

35

Explanation:

For this case we know that the sample size is n=36.

The degrees of freedom if we are conducting a test about the true mean are given by:

`df =n-1`

And replacing the info given we got:

`df = 36-1=35`

And the best option would be:

35

Answer 2

35

Explanation:

Given

Sample of rat

Population = 36

Required

Find the degree of freedom.

Given that the sample is a single-sample t test;

A single-sample t test has just one parameter has its estimate;

And its degree of freedom is calculated as thus;

`df = n - 1`

Where df represents the degree of freedom and n represents the sample size;

By substituting n = 36;

`df = 36 - 1`

`df = 35`

Hence, the degree of freedom of the sample of 36 rats for a single-sample t test is 35