Answer:
7s
Step-by-step explanation:
We can combine this because they are like terms.
Maybe c or A not completely sure try looking for the one you think it is and try reading it again
Answer: There are 980 degrees of freedom for the within subjects factor.
Step-by-step explanation:
Since we have given that
Number of groups = 20
Number of participants in each group = 50
So, number of participants in 20 groups is given by

As we know that
Degrees of freedom for the within subjects factor would be

Hence, there are 980 degrees of freedom for the within subjects factor.
Answer:
Our eyes are sensitive to all electromagnet waves with a wavelength longer than infrared
Step-by-step explanation:
I hope this helps :) good luck!