Answer:
-11
Step-by-step explanation:
Hope this helps!
and if u ment 32-21 it’s 11
Answer:
6x
Step-by-step explanation:
Step 1: Write equation
x + 2x + 3x
Step 2: Combine like terms
3x + 3x
6x
Answer:

Step-by-step explanation:

Answer: 6. d
7. b
8. d
9. c
Step-by-step explanation:
Answer:
Test statistic,
(to 3 dp)
Step-by-step explanation:
Deviation, d = x -y
Sample mean for the deviation


Standard deviation: 


SD =2.93
Under the null hypothesis, the formula for the test statistics will be given by:

