N=12
1/4n = 10-7
1/4n = 3
N = 3x4 = 12
I think there are no potential bias since expect for when the test subjects were selected. There is no mention of how the subjects were selected. This could result to lurking variables which are is the hereditary susceptibility to tumors and congenital conditions of the mice that might be in the form of tumors already present in the mice's bodies.
(1) The train travels 4 miles per gallon.
(2) The slope of the graph is 
Explanation:
(1) The miles that train travels per gallon is given by
Dividing, we have,
Thus, the train travels 4 miles per gallon.
(2) To determine the slope, let us consider two points from the graph.
The coordinates are 
and 
Thus, substituting the coordinates in the slope formula, we get,
Simplifying, we have,
Thus, the slope of the graph is
Answer:
A. Domain: {-8, -6, -4, -2, 0} Range: {2}
Step-by-step explanation:
The domain of a function is the x values, the range is the y values. you order them in either greatest to least or least to greatest (keep this consistent in both domain and range values). also, if a value repeats, only list it once (this is why the range is {2} rather than {2, 2, 2, 2, 2} )
Answer: If two sides in one triangle are congruent to two sides of a second triangle, and also if the included angles are congruent, then the triangles are congruent. Using labels: If in triangles ABC and DEF, AB = DE, AC = DF, and angle A = angle D, then triangle ABC is congruent to triangle DEF.
Hope it helps
