20. 3 notebooks
21. 2ab, the coefficient is 2
22. t = 16
Hope this helps! :)
A= 280 b=280 c=120 d=120 i allredy did this it was so easy
Answer: option C) 0.05%
In a normal distribution there are no biases, the chances (probabilities) of any member to be selected are the same. So, the chance to choose Pablo are the same that the chance to choose Dawn.
1/15 is the answer, however, t would be much more helpful if you'de put the choices
The Answer is in the attached file, I'm sorry if I can't write it on laptop, hope this helps man! :) and tell me if it's correct or wrong when your teacher see's it.
