Answer:25
Step-by-step explanation:
Answer:
z=-1.591
Step-by-step explanation:
Null Hypotheses,

So we use z-test for one population proportion (right-tailed test)
According to this informaton, we defined that

(critical value)
So our Rejection region is 

Not rejection.
Answer 38.6
Step-by-step explanation:
21 x .84 = 17.64
17.64 + 21 = 38.64
Answer:
-6
Step-by-step explanation:
djhcjici4n c rncinr
Answer:
y= 0.8x
Step-by-step explanation: