He should use a sample size of 655.
We can use the formula
We find the z-value by first subtracting the confidence level from 1:
1 - 0.8 = 0.2
Divide this by 2:
0.2/2 = 0.1
Subtract this from 1:
1 - 0.1 = 0.9
Using a z-table (http://www.z-table.com) we find the z-score associated with this is 1.28.
Now we plug our information into our formula:
Answer:
I think the answer is y = 3x - 10
Step-by-step explanation:
Answer:
The Answer is: y = y
Step-by-step explanation:
12y + 6 = 12y + 6
12y = 12/y
Divide by 12:
12y / 12 = 12y / 12
y = y
You are on the right track! Please check that the equation was written down correctly.
Otherwise, y = y
Answer:
D. 20 + 2.50x < 50
Step-by-step explanation:
20 + 2.50x < 50 - the sign has to be less than because Millie wants to spend less than $50
Answer:
Step-by-step explanation: