Using the z-distribution, it is found that the 90% confidence interval for the proportion of Americans who believe that the minimum wage should be raised is (0.4689, 0.5311).
<h3>Confidence interval of a proportion</h3>
- In a sample with a number n of people surveyed with a probability of a success of
, and a confidence level of
, we have the following <em>confidence interval of proportions.</em>
- In which z is the z-score that has a p-value of
.
In this problem:
- 350 out of 700 in the sample said yes, hence
.
- 90% confidence level, hence
, z is the value of Z that has a p-value of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval for the proportion of Americans who believe that the minimum wage should be raised is (0.4689, 0.5311).
To learn more about the z-distribution, you can take a look at brainly.com/question/26130512
What is the sum of 1.57 and 6.88?
Ok, so lets work this out together!
Sum means add.
6.88
+ 1.57
That would be:
= 8.45
Hope i helped!
Answer:
in the forth qadritic ( iv) please mark me
Answer :
I have solved for the points.
Explanation :
Just get a protractor and plot out the angles into a circle. Starting with the largest angle.
Answer:
5 hours
Step-by-step explanation:
So what you have to do is set the two equal to one another and solve for x
50+36x=35+39x
-35 -35
15+36x=39x
-36x -36x
15= 3x
/3 /3
5=x