Answer:
D) We are 95 percent confident that the mean difference in scores for all children in the program is between 20.1 points and 23.9 points.
Step-by-step explanation:
x% confidence interval:
A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.
95 percent confidence interval (20.1,23.9)
We are 95% sure that the population mean(that is, the mean for all children in the program) is in this interval. So the correct answer is given by option D.
Answer:
B(3)
Step-by-step explanation:
reorder 1,2,3,4,5
middle number is 3
The angle measured from the normal to the mirror will be
.. arctan(14/11.5) ≈ 50.6°
Triangle PQR and triangle A, B, C, and D are represented on the following graph.
Translating a shape gives the effect of 'moving' the shape only. The transformation does not cause a shape to change direction or to change size.
The triangle that represents the translation of PQR is triangle D. The translation is 0 unit on the x-axis and 2 units down
Answer:
x = 29
Step-by-step explanation:
-3(3 + x) + 4(x - 6) = -4
Distribute -3 by the first set of parentheses and distribute 4 by the second set of parentheses.
-9 - 3x + 4x - 24 = -4
Collect like terms on the left side.
x - 33 = -4
Add 33 to both sides.
x = 29