Answer:
choices 1,2,3
Step-by-step explanation:
Standard deviation=4.
let the mean be 12 and the score be 0 (therefore 12 point difference.)
0-12/s=-3 (s being standard deviation)
-12/4 = -3
<span>If there are many explanations for results, a more specific test should be devised , im pretty sure it's true</span>
Http://www.tiger-algebra.com/drill/a-64a~4/n~3/
Does this look right?
it might help for you future problems as well.
Answer:
3/4 1/4
Step-by-step explanation: