If you have samples of n 1 equals 22 and n 2 equals 20, in performing the pooled-variance t test, you have 40 degrees of freedom.
The t-test method is a method where we analyze two sets of data which both these data are independent of each other. This pooled variance test helps us in getting the overall variance in both these different sample sets when we know that both the sample sets are almost equal.
To calculate degrees of freedom, we have the formula
df = n1 +n2 -2
According to the question, n1= 22 and n2= 20
Therefore, degree of freedom= 22 +20 -2 = 40
Hence, degree of freedom is 40.
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Answer:
c. promote social and environmental justice
Explanation:
- The environmentalist believes that the governments should set up a program that set forth and promotes the social and the environmental laws and the Justice
- To the environment and also creates set of standards that help protect and safeguard the interest of the planet and the atmosphere and thus thereby are enforced to protect the environment of the country.
How the revolution lead to the need for reform is that because the industrials ( cars, clothing, farming, mechines) many people were put into had working conditions, long work hours, child labor, and low wages. People sarted making reforms to be we to control business poor practices.
