4 *
Y Z
Z
х
Z
z
z
X
ZY
The two spinners above are
spun. What is the probability
of getting a perfect square,
then the letter Z?
A) 9780
Bl 3/20
C) 178
D} 5/13
El 1740

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Evaluate the expression. (9 + 5)(3 + 2)0