Given data:
Sample size
Sample proportion of people support candidate A:
Population proportion of people support Candidate A :
Check the condition: and
Null Hyposthesis:
Alternative Hypothesis:
The test statistics:
Plug in p=0.56, P=0.40 and n=100 in the above formula,
The table value of z at 10% of significance level is 1.28
Table value is less than the calculated value.
Hence is rejected at 10% level.
Therefore there is the evidence at an alpha level of 10% to conclude that the percentage of people who support candidate A has changed.
15-3q+6=9
21-3q=9
-21 -21
-3q=-12
Divide bye 13 each side
Q=4
Hope I helped, as an Ambitous rank a brainliest mark would mean the world to me. Now go get that A!
-0.5625
is the answer if u divide them.
Step-by-step explanation: