<span>The answer would be a reflection over the x-axis and then a reflection over the y-axis</span>
Answer:
7.142
Step-by-step explanation:
error=30-28
error=2
%error=error/actual valuex100
%error=2/28*100
%error= 7.142
Answer: D is the answer I think.
Answer:
to
Step-by-step explanation:
Given :The owner of a restaurant is reviewing customer complaints. In a random sample of 227 complaints, 57 complaints were about the slow speed of the service.
To Find :Create a 95% confidence interval for the proportion of complaints that were about the slow speed of the service.
Solution:
n = 227
x = 57
Formula of confidence for proportion:
to
![\widecap{p}=\frac{x}{n}](https://tex.z-dn.net/?f=%5Cwidecap%7Bp%7D%3D%5Cfrac%7Bx%7D%7Bn%7D)
![\widecap{p}=\frac{57}{227}](https://tex.z-dn.net/?f=%5Cwidecap%7Bp%7D%3D%5Cfrac%7B57%7D%7B227%7D)
![\widecap{p}=0.25](https://tex.z-dn.net/?f=%5Cwidecap%7Bp%7D%3D0.25)
![\widecap{q}=1-\widecap{p}](https://tex.z-dn.net/?f=%5Cwidecap%7Bq%7D%3D1-%5Cwidecap%7Bp%7D)
![\widecap{q}=1-0.25](https://tex.z-dn.net/?f=%5Cwidecap%7Bq%7D%3D1-0.25)
![\widecap{q}=0.75](https://tex.z-dn.net/?f=%5Cwidecap%7Bq%7D%3D0.75)
z at 95% is 1.96
Substitute the values in the formula :
Confidence for proportion:
to
Confidence for proportion:
to
Hence 95% confidence interval for the proportion of complaints that were about the slow speed of the service is
to