Answer:
Step-by-step explanation:
72
Answer: 95% confidence interval would be (0.555,0.745).
Step-by-step explanation:
Since we have given that
n = 97
x = 63
So, we get that

At 95% confidence interval , z = 1.96
so, Margin of error would be

So, interval would be

Hence, 95% confidence interval would be (0.555,0.745).
Answer:
X=28/9, Y=7/5
Step-by-step explanation:
By using Elimination method
Multiply equation 1 by 9 and equation 2 by 3/2
<h2>
There you get those values listed above for <u>x</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>y</u></h2>
The answer is 7, your welcome if this helped!