Answer:
95% confidence interval: (0.402,0.598)
Step-by-step explanation:
We are given the following in the question:
Proportion of student who voted Republican in the last election = 50%
Standard error = 5% = 0.05
95% confidence interval:
Putting values, we get,
is the required confidence interval.
I believe the answer is
<h2>D.</h2>
<u>''Twice as many students will take art as will take choir''</u>
<u />
<h3>There are 80 students taking art, and 40 students taking choir. </h3><h3>Art is twice the size of choir.</h3><h3 />
(I'm giving away free points in my question)
I hope this helped! +*♡
The equation that represents the amount earned is y = 12 + 2.5x
<h3>How to determine the equation?</h3>
The given parameters are:
- Chargers per day = $12
- Charges per walk = $2.5 per walk
Let the number of walks be x and the total charges per day be y.
So, we have:
y = 12 + 2.5x
Hence, the equation that represents the amount earned is y = 12 + 2.5x
See attachment for the graph
Read more about linear equations at:
brainly.com/question/13763238
#SPJ1
Answer:
Marks age is 24.
Step-by-step explanation:
If Sunita's age is x then Mark's age = 4x/3 years.
In 12 years their ages will be (x + 12) and 4x/3 + 12.
So (x + 12) / (4x/3 + 12) = 5/6
6(x + 12) = 5(4x/3 + 12)
6x + 72 = 20x / 3 + 60
72 - 60 = 20x/3 - 6x Multiply through by 3:
216 - 180 = 20x - 18x
2x = 36
x = 18 = Sunita's age
So Mark's age is 18 * 4/3 = 24 years.