Answer:
Explanation:
The most immediate impact of erratic rainfall on rural livelihoods is on crop production. Droughts and floods undermine farm yields and the national har- vest, reducing household and national food availability, and agricultural income derived from crop sales.
Eliminating child labor is problematic (in third world countries) because of outsourcing. We have our products made in foreign countries with no child labor laws because it's cheaper. We eliminate child labor, the price of production goes up and bushiness have to charge more to cover the costs, hiking the prices to consumers in our economy. Therefore, big companies don't really want child labor to be eliminated. A lot more could be done about it, but many people choose not to help for their own personal gain.
China had:silk, porcelain, and paper
China needed:cotton, horses, and glass
Solution :
a). Let x denotes ACT scores.
ACT scores = 
Mean, 
Sample variance, 
= 11
b). To test whether or not variance of ACT scores of population (say 
) of the UTC students is significantly more than 8.
Consider the hypothesis :
vs 
It is a right tailed test and α = 0.05
We have
So test statics is
= 8.25
Since our 
and it falls in a acceptation region, hence we fail to reject 
and conclude that variance is not greater than 8 significantly.
