Answer:
1716
Step-by-step explanation:
We can use the nCr equation to find this
n=13
r=7
Given :
Sandra has 1,120 photos. She wants to place them in a photo album. Each page in the album will hold 8 photos.
To Find :
Number of pages required .
Solution :
Let, number of pages required are x.
Now,
Hence, this is the required solution.
Answer:
![n = 532](https://tex.z-dn.net/?f=%20n%20%3D%20532)
And from the 532 adults in the sample we know that 174 adults said that they were not confident that the food they eat in country A is safe, and we can notate that with:
![X= 174](https://tex.z-dn.net/?f=%20X%3D%20174)
We can estimate the proportion of adults who said that they are not confident that the food they eat in country A is safe
with this formula:
![\hat p_A = \frac{X}{n}= \frac{174}{532}= 0.327](https://tex.z-dn.net/?f=%5Chat%20p_A%20%3D%20%5Cfrac%7BX%7D%7Bn%7D%3D%20%5Cfrac%7B174%7D%7B532%7D%3D%200.327)
And the complement rule is given by:
![\hat q_A = 1- \hat p_A = 1-0.327= 0.673](https://tex.z-dn.net/?f=%20%5Chat%20q_A%20%3D%201-%20%5Chat%20p_A%20%3D%201-0.327%3D%200.673)
And this proportion represent the proportion of adults who NOT said that they are not confident that the food they eat in country A
Step-by-step explanation:
For this case we have the following info given from a survey.
The total sample size is 532 so then we have:
![n = 532](https://tex.z-dn.net/?f=%20n%20%3D%20532)
And from the 532 adults in the sample we know that 174 adults said that they were not confident that the food they eat in country A is safe, and we can notate that with:
![X= 174](https://tex.z-dn.net/?f=%20X%3D%20174)
We can estimate the proportion of adults who said that they are not confident that the food they eat in country A is safe
with this formula:
![\hat p_A = \frac{X}{n}= \frac{174}{532}= 0.327](https://tex.z-dn.net/?f=%5Chat%20p_A%20%3D%20%5Cfrac%7BX%7D%7Bn%7D%3D%20%5Cfrac%7B174%7D%7B532%7D%3D%200.327)
And the complement rule is given by:
![\hat q_A = 1- \hat p_A = 1-0.327= 0.673](https://tex.z-dn.net/?f=%20%5Chat%20q_A%20%3D%201-%20%5Chat%20p_A%20%3D%201-0.327%3D%200.673)
And this proportion represent the proportion of adults who NOT said that they are not confident that the food they eat in country A
Answer:
1/2
Step-by-step explanation:
3/8 + 1/8 = 4/8 = 1/2