The answer is b because 1.95+.85+2.80 and 2.80 rounded to the nearest whole # is 3.
(x + 2)² - 10 = 0 (assuming it's equal to zero)
Expand the binomial: (x + y)² = x² + 2xy + y²
Thus, x² + 4x + 4 - 10 = 0
x² + 4x - 6 = 0

(by quadratic formula)



, since we're taking the positive solution.
Imagine the paths as a right triangle with one leg measuring 8 miles and the other 5. You need to find the hypotenuse using the pythagorean theorem, so take 8 squared + 5 squared equals x squared, which gives you 64+25=89, then find the square root of 89 which is 9.433981132
1/2 (Tue)<2/3 (Sat)<5/6 (Fri)<1 5/8 (Thur)<1 3/4 (Mon)<2 1/8 (Wed)
Answer:
The calculated 99% confidence interval is wider than the 95% confidence interval.
Step-by-step explanation:
We are given the following in the question:
95% confidence interval for the population proportion
(0.65, 0.69)
Let
be the sample proportion
Confidence interval:


Let x be the standard error, then, we can write

Solving the two equations, we get,

99% Confidence interval:


Putting values, we get,

Thus, the calculated 99% confidence interval is wider than the 95% confidence interval .