Africa and Asia are two continents or regions have the most countries expected to be facing water scarcity by 2024
Answer: Option D
<u>Explanation:</u>
When there is no enough water for the people of a certain region here rises the water scarcity. People in Asia almost dug deep for the groundwater resources and Africa facing scarcity of having clean water.
Huge children have become prey for the water scarcity. Meanwhile, in Asia, most of the countries started facing water scarcity on a big level. Dried wells, ponds, lakes, and rivers are the main cause.
Drought will be the biggest result of water-scarce which can turn the countries economy upside down. Also, climatic change is another cause in Africa that is vulnerable to side effects. Global warming will be the main reason for water scarcity.
Answer:
What?
Explanation:
What are people supposed to answer?
Answer:
1. Co-variance= -1.2
2. correlation coefficient= -0.4404
3. There is weak negative relationship between x and y.
Explanation:
1.
Co-variance= Cov(x,y)= sum[(x-xbar)(y-ybar)]/n
xbar=sumx/n=32/5=6.4
ybar=sumy/n=35/5=7
x 7 8 5 3 9
x-xbar 0.6 1.6 -1.4 -3.4 2.6
y 7 5 9 7 7
y-ybar 0 -2 2 0 0
(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0
Cov(x,y)= sum[(x-xbar)(y-ybar)]/n=-6/5=-1.2
Cov(x,y)=-1.2
2.
correlation coefficient=r
x 7 8 5 3 9
x-xbar 0.6 1.6 -1.4 -3.4 2.6
y 7 5 9 7 7
y-ybar 0 -2 2 0 0
(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0
(x-xbar)² 0.36 2.56 1.96 11.56 6.76
(y-ybar)² 0 4 4 0 0
r=-0.4404
3. Since the value of correlation coefficient is negative and less than 0.5 , so, we can say that there is weak negative relationship between x and y.
(a)Sarah Hale is the woman who pushed for Thanksgiving and fought for rights for women education.She<span> published numerous editorials urging several American presidents when they were in office to nationalize the celebration of Thanksgiving. That's my answer.</span>
