Answer:
D. Always about the parameter only
Step-by-step explanation: A Null Hypothesis is a hypothesis used in statistics to show that there is no variation among the variables of interest. A Null Hypothesis also can be said to be giving a proposal that there is not significant difference between the observed data.
An alternative hypothesis is a hypothesis in statistics given contrary to the Null Hypothesis,a Null hypothesis can also be seen in statistics as stating that something is happening among the data.
Answer:
I;m sorry if im wrong but i think it would be either b or d sorry if im wrong at least i tried that is all that matters
Step-by-step explanation:
Answer: y = -5; x = -2
Step-by-step explanation:
- 5y – 10x=45
- 3y + 10x = -5
Combining both equations
-8y = 40
y= 40/ -8
y = -5
Substitute y = -5 into any of the equations to get the value of x
-5 (-5) - 10x = 45
25 -10× = 45
-10x =45 -25
-10× = 20
Divide both sides by -10
x = -2
Mark as brainliest please
Answer: d
Step-by-step explanation:
<u>Given</u>:
The radius of the inner circle is 13 yards.
The width of the outer circle is 8 yards.
We need to determine the area of the composite figure.
<u>Radius of the composite figure:</u>
The radius of the composite figure can be determined by adding the radius of the inner circle and the width of the outer circle.
Thus, we have;
Thus, the radius of the composite figure is 21 yards.
<u>Area of the composite figure:</u>
The area of the composite figure can be determined using the formula,
Substituting π = 3.14 and r = 21, we get;
Thus, the area of the composite figure is 1384.74 square yards.
