Both the equation show a graph of a parabola. The equation y=-x^2+1 is a parabola opening downward since the x variable has a negative sign. While the equation y=x^2 is also a parabola opening upward since x^2 is positive. Both parabola have axis of symmetry on the y-axis. Vertex for the first parabola is on (0,1) while the second parabola is at the origin.
The answer is C.) at 99.7%
In order to be able to consider this a valid null hypothesis is to accept the fact there is no significant difference between the two subject population, this statement is true for inferential statistics.. In this case the water consumption in the two district has a confidence interval should be chosen with respect to what is the closest to 100%.
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Answer:
The probability that a club member picked randomly is female, given that the person prefers swimming on weekends, is 0.8 = 80%.
Step-by-step explanation:
We use the conditional probability formula to solve this question. It is
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Prefers swimming on weekends.
Event B: Being female.
25% prefer swimming on weekends
This means that
It is found that 20% of the members in that city prefer swimming on weekends and are female
This means that
So
The probability that a club member picked randomly is female, given that the person prefers swimming on weekends, is 0.8 = 80%.
X = 152.
Figure out the angles of the insides of the triangle and then you'll have your answer:
First angle = (supplementary) 180 - 85 = 95
Second angle = (supplementary) 180 - 123 = 57
95 + 57 = 152
152 = the measure of angles one and two
Find the third angle
180 - 152 = 28
Angle x and angle three (28) are supplementary angles so subtract to find x:
180 - 28 = 152