Answer:
The National Security Agency is the U.S. government's primary eavesdropping agency. It intercepts, decodes, and analyzes foreign communications — such as emails, telephone calls, and other "signals intelligence." The Fort Meade, Md.–based agency, which has an annual budget of about $10 billion and employs some 40,000 people, has long carried out this mission in the shadows. But a series of leaks by former agency contractor Edward Snowden has revealed the stunning scale of its global surveillance operation. It's now known that the NSA scoops up and stores billions of internet communications and cellphone records from the U.S. and around the world every day, which can then be studied by the agency's legion of code breakers, data miners, and counterterrorism specialists. When President Obama receives his daily intelligence briefing, "at least 75 percent" comes from the NSA's cyberspies, said Mike McConnell, director of national intelligence under President George W. Bush.
Explanation:
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Answer:
The united states and britain
Explanation:
it was because germany was not in contact with these two countries by land. they had to use airplanes and ships.
Education for african americans during reconstruction. People of all ages began to be educated to read,count, and write.
The regression model that best fit the data set is : Y=10.35-0.0467X
Explanation:
The equation of a regression line is given by;
Y=a+bX where b is the slope of the line a is the y-intercept , Y is the dependent variable and X is the independent variable
The slope b is given by;
b = n(∑xy)-(∑x)(∑y) / n(∑x² )-(∑x)²
a=(∑y)(∑x²)-(∑x)(∑xy) /n(∑x²)-(∑x)²
n is the sample size = 4
Form a table as;
x y xy x² y²
2 13 26 4 169
4 8 32 16 64
5 7.5 37.5 25 56.25
8 12 96 64 144
<u>19 40.5 191.5 109 433.25--------sum</u>
<u></u>
a=(∑y)(∑x²)-(∑x)(∑xy) /n(∑x²)-(∑x)²
a=(40.5)(109) - (19)(191.5) / 4(109) - (19)²
a=(4414.5 - 3638.5) / (436-361)
a=776/75
a=10.35
b = n(∑xy)-(∑x)(∑y) / n(∑x² )-(∑x)²
b=4(191.5)-(19)(40.5) / 4 (109)-19²
b=766-769.5 /436-361
b=-3.5/75
b= - 0.04667
The model will be represented by the equation;
Y=10.35 -0.0466X
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Regression Model: brainly.com/question/10209928
Keyword : regression, model, best fit, data set
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