Answer:
x=-1 y=1 z=-.7?
Step-by-step explanation:
Answer: A. The difference of the two means is significant at the 68% confidence level, so the null hypothesis must be rejected.
Step-by-step explanation:
I just got it right on PLATO, so I know it’s 100% correct.
Answer:
7
Step-by-step explanation:
280=40t/40
t=7
Answer:
2080
Step-by-step explanation: