Answer:
The conclusion about p using an absolute value inequality is
Step-by-step explanation:
From the question we are told that
The sample proportion is
The margin of error is
The confidence interval is mathematically represented as
=>
=>
14 of the machine that cost $150 was sold and 8 of the machine that cost $225 was sold.
To solve this problem, we would write a system of linear equations.
We can proceed to write our equations now.
From equation 1
put equation (iii) into (ii)
Since we know the number of y, we can simply substitute it into equation (i) and solve.
From the calculations above, 14 of the machine that cost $150 was sold and 8 of the machine that cost $255 was sold.
Learn more about system of equations here;