Answer:
Confidence limit = [52.8%, 75.2%]
Step-by-step explanation:
![P=\frac{45}{70}= 0.64](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B45%7D%7B70%7D%3D%200.64)
![(1-P)=1-0.64=0.36](https://tex.z-dn.net/?f=%281-P%29%3D1-0.64%3D0.36)
![n= 70](https://tex.z-dn.net/?f=n%3D%2070)
±
![\sqrt{\frac{P(1-P)}{n} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7BP%281-P%29%7D%7Bn%7D%20%7D)
where the value
will be taken from the z-table for 95% confidence interval
1-0.95= 0.05/2= 0.025
0.95+0.025= 0.0975
From the z-table the value of
corresponding to 0.0975 is 1.96
±
![\sqrt{\frac{0.64*0.36}{70} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B0.64%2A0.36%7D%7B70%7D%20%7D)
±
![(0.057)](https://tex.z-dn.net/?f=%280.057%29)
± ![0.112](https://tex.z-dn.net/?f=0.112)
% ±
%
so the confidence interval is
%
%
![[52.8, 75.2]](https://tex.z-dn.net/?f=%5B52.8%2C%2075.2%5D)
Answer:
1536
Step-by-step explanation:
simply divide 55296 by 36
In December she would have saved $1585 because 1235 + 250 = 1485. You can find how much money she raised in those 2 months by adding the totals of both months together, so 1485 + 1235 = 2720. She saved $2720 in the 2 months.
Answer:
34.086
Step-by-step explanation:
calculator