It would take her 280 minutes.
Solving: 35/14= 2.5. 2.5•112 = 280
Answer:The center is (-5,2)
The radius is 5
Step-by-step explanation:
Equation of a circle is:
(x-h)^2+(y-k)^2=r^2
(x+5)^2+(y-2)^2=5^2
Comparing both equations we get :
The center (-5,2)
The radius is 5
Using the z-distribution, it is found that the value of the test statistic is z = 10.33.
At the null hypothesis, it is <u>tested if the proportion</u> is of
, hence:
![H_0: p = 0.75](https://tex.z-dn.net/?f=H_0%3A%20p%20%3D%200.75)
At the alternative hypothesis, it is <u>tested if the proportion is different</u>, that is:
![H_1: p \neq 0.75](https://tex.z-dn.net/?f=H_1%3A%20p%20%5Cneq%200.75)
The test statistic is given by:
In which:
is the sample proportion.
- p is the proportion tested at the null hypothesis.
For this problem, the parameters are: ![p = 0.75, \overline{p} = 0.89, n = 1201](https://tex.z-dn.net/?f=p%20%3D%200.75%2C%20%5Coverline%7Bp%7D%20%3D%200.89%2C%20n%20%3D%201201)
Hence:
![z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7B%5Coverline%7Bp%7D%20-%20p%7D%7B%5Csqrt%7B%5Cfrac%7Bp%281-p%29%7D%7Bn%7D%7D%7D)
![z = \frac{0.89 - 0.75}{\sqrt{\frac{0.75(0.25)}{1021}}}](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7B0.89%20-%200.75%7D%7B%5Csqrt%7B%5Cfrac%7B0.75%280.25%29%7D%7B1021%7D%7D%7D)
![z = 10.33](https://tex.z-dn.net/?f=z%20%3D%2010.33)
A similar problem is given at brainly.com/question/24330815
Answer:
Step-by-step explanation:
who cares about SOME boys and girls