[67.9 %, 82.1 %] is the 95% confidence interval for the proportion of test-takers answering the question correctly. So we have [67.9 %, 82.1 %] In a random sample of 144 test-takers with 75% answered the question correctly. So the answer in this question is [67.9 %, 82.1 %].
0.75r+0.75(3.20)=0.75(r+3.20)
So the answer is A. The product of 0.75 with the sum of r and 3.20
Answer:
y = -1/2x -3
Step-by-step explanation:
The line perpendicular to one with a slope of 2 will have a slope that is the negative reciprocal of 2, that is, -1/2. The given point is the y-intercept of the required line, so we can write its equation directly in slope-intercept form:
y = mx + b
where m is the slope (-1/2), and b is the y-intercept (-3). Your line is ...
y = -1/2x -3
Answer:
Step-by-step explanation:
What factors does 8A - 12х3 + 20х^2 have in common? 4 is the greatest factor common to 8, 12 and 20.
