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.
The Federal Reserve uses its policy tools to affect the availability and cost of credit in the economy as it conducts monetary policy, which largely affects employment and inflation.
<h3>What is monetary policy?</h3>
- The Federal Reserve's actions and communications to advance maximum employment, stable prices, and moderate long-term interest rates—the three economic objectives that the Congress has directed the Federal Reserve to pursue—combine to form monetary policy in the United States.
- Reserve requirements, the discount rate, and open market operations are the three instruments the Fed has historically used to implement monetary policy.
- The actions performed by a nation's central bank to manage the money supply in order to maintain economic stability are referred to as monetary policy.
- For instance, policymakers use instruments like interest rates, reserves, bonds, etc. to manage the flow of money in order to increase employment, GDP, and price stability.
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Answer:
C. They are more likely to emerge as leaders.
Explanation:
A narcissist is an individual who has inflated sense of importance, it is a personality disorder in which an individual shows an excessive interest in or admiration of him/herself and his/her physical appearance.
Narcissists are more likely to emerge as leaders.
When developing a research project enrolling non-English speakers, researchers should Create a reading consent form for grades 8 and under and budget for translation costs.
The preferred method is to provide consent forms in the subject's language. For occasional unexpected non-English subjects, alternative "short form" methods may be used to obtain results in other entities.
Studies in which subjects were assigned to research activities based on undesirable or unfavorable physical characteristics as assessed by members of the research team.
Schools may disclose, without consent, directory information such as a student's name, address, telephone number, date and place of birth, honors and awards, and dates of attendance.
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They had a good and experienced General/Leader, which is obviously George Washington.
