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svlad2 [7]
3 years ago
13

A matched-pairs t-test is NOT an appropriate way to analyze data consisting of which of the following? Measurements of annual in

come taken both before and after a two-year training course for a random sample of 100 people who took the course A .Measurements of annual income for each twin for 100 randomly selected pairs of twins B. Measurements of annual income for both individuals in pairs formed by matching 100 people from State A and 100 people from State B based on level of education C. Measurements of annual income for both individuals in pairs formed by assigning 100 people to pairs at random D. Measurements of annual income recorded for both spouses of 100 randomly selected married couples
Mathematics
1 answer:
o-na [289]3 years ago
7 0

Answer:

Step-by-step explanation:

A matched pair t test is one in which the set of data is divided into two sets of data and the test is done to test the difference between the pairs. Sometimes this is called paired t test.\

This is done normally where one group of sample or population can be paired with other group of sample /population.

Hence

A .Measurements of annual income for each twin for 100 randomly selected pairs of twins -- True

B. Measurements of annual income for both individuals in pairs formed by matching 100 people from State A and 100 people from State B based on level of education -- True

C. Measurements of annual income for both individuals in pairs formed by assigning 100 people to pairs at random -- True

D. Measurements of annual income recorded for both spouses of 100 randomly selected married couples  --False here we cannot say paired as these people are not grouped under the same conditions.

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A rectangle is placed around a semicircle as shown below. The length of the rectangle is 14mm. Find the area of the shaded regio
Damm [24]

Image is missing, so i have attached it

Answer:

21.07 mm²

Step-by-step explanation:

We will use the Formulas:

Area of semicircle = πr²/2

Area_rectangle = Length x width = Lw

We are given:

Length of rectangle = 14 mm

From the attached image, the diameter of the semicircle is equal to the length of the rectangle.

Thus;

diameter of semicircle = length of rectangle

Therefore,

diameter of semicircle = 14 mm

Also, from the attached image, the radius of the semicircle is equal to the width of the rectangle.

Thus;

diameter of semicircle/2 = radius of semicircle

Hence;

radius of semicircle = 14/2 = 7mm = width of rectangle

Thus;

Area of rectangle = L*w = 14 × 7 = 98 mm²

Area of semicircle = πr²/2 = π×7²/2 = 76.93 mm²

To get the area of the shaded region, we will subtract area of the semi-circle from the area of the rectangle.

Area of shaded region = Area_rectangle - Area_semicircle = 98 - 76.93 = 21.07 mm²

7 0
3 years ago
Please show picture 6×(3+2) divided by 10 ??? Please show picture
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:) There's no picture but I can solve this for you :)

Do PEMDAS

Parentheses
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\frac{6(3+2)}{10} \\  \\ 3 + 2  =5,right?  \\  \\ \frac{6(5)}{10} \\ \\  6(5)= 30,right ?  \\ \\  \frac{30}{10}  = 3,right \\ \\ \\ \\  Answer: 3

Good luck on your assignment and enjoy your day! 

                                              ~MeIsKaitlyn:)
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3 years ago
100-4 divided 2x(3+7
bezimeni [28]

Answer:

Step-by-step explanation:

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8 0
3 years ago
The perimeter of a triangle is 22cm. If one of the sides is 9cm,find the other sides if the area of the triangle is 20.976cm2 ​
Mekhanik [1.2K]

Answer:

Third side = 8.34 cm

Step-by-step explanation:

Given that,

The perimeter of a triangle, P = 22 cm

One side of a triangle, b = 9 cm

The area of the triangle, A = 20.976 cm²

The formula for the area of a triangle is given by :

A=\dfrac{1}{2}\times b\times h\\\\h=\dfrac{2A}{b}\\\\h=\dfrac{2\times 20.976}{9}\\\\h=4.66\ cm

Perimeter = Sum of all sides

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x = 22 - 13.66

x = 8.34 cm

So, the third side of the triangle is 8.34 cm.

8 0
3 years ago
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