<span>The computation for the confidence level = (18/20) x 100% =
90 %, the E or the margin error = 0.023 and the p = to 0.71. Confidence
interval can be achieved by using the formula (p-E, p+E) = (0.71-0.025,
0.71+0.025). Therefore, the confidence interval is (0.685,0.735).</span>
The answer is 30 because u need to add 60+90=150 and then subtract 180-150 which gives you 30
To find a percentage divide the first number by the second.

=

=1.00
Now that you have your number, move the decimal point over 2 to the right and add your percentage sign.
100.00%
Your answer is 100%
Answer:
5x cars
Step-by-step explanation:
(# of cars washed) = (# cars washed per day)(# of days)
= (x/day) * (5 days) = 5x
cars