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disa [49]
2 years ago
7

The difference between the value of the sample statistic and the value of the corresponding population parameter is called the _

____. a. standard error b. statistical error c. sampling error d. proportion error
Mathematics
1 answer:
mel-nik [20]2 years ago
7 0

Answer: c. sampling error

Step-by-step explanation:

  • A population parameter is a number that is evaluated to describe the whole population . For example : Population mean , Population standard deviation etc.
  • A sample statistic gives the estimate value of the population parameter. For example : Sample mean , sample proportion.

Since, the sample is a subset of population , so there are chances for unavoidable variation in sample mean from the population mean that varies from sample to sample .

This variation is known as sampling error.

∴ The difference between the value of the sample statistic and the value of the corresponding population parameter is called the sampling error .

Hence,the correct answer is c. sampling error .

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Find the area and circumference of the figure below.
nexus9112 [7]

Answer:

162.12385 cubic inches

Step-by-step explanation:

Assuming finding the area and circumference of the shaded area.

Triangle with 3 sides and 90 degrees on one side, we can use the Pythagorean Theorem to solve for the missing side.

Pythag. Theorem says

a^2 + b^2 = c^2

//a and b are the 2 small sides touching to the 90 degree angle

//^2 means squared, or the number multiplied by itself

(16)^2 +(30)^2 = c^2

16x16 + 30x30 = c^2

256 + 900 = c^2

1156 = c^2

Take the square root of both sides to get rid of (^2) from the right side of the equation.

sqrt(1156) = sqrt(c^2)

34 = c

So the longest side is 34 inches.

Coincidentally, this is the diameter of the Half Circle.

The radius = (diameter/2) = 34/2 = 16 inches

radius = 16 in.

Circumference of a Circle formula:

C = 2*pi*r; pi=3.14; r = radius

But this is a half circle, so C = pi*r = 3.14*16 = 50.2654

Now to find the area its a little more work.

Area of shaded part is equal to

Area of half circle   minus    area of triangle

Area of Circle: pi*r^2

-->since half circle: Area of half circle is: (pi*r^2)/2

Area of triangle: (base*height)/2: (16*30)/2

A of circle - A of triangle

(3.14*16^2)/2 - (16*30)/2

Area of shaded region = 162.12385

7 0
3 years ago
What is the solution to this equation?<br> 4(4x + 1) = 3x - 46 - x) + 8
liubo4ka [24]

Answer:

4(4x+1)=(3x-46-x)+8

16x+4=3x-46-x+8

16x-3x+x=-46-4+8

14x=-42

14x/14=-42/14

x=-3

5 0
3 years ago
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Can somebody help me with this please!
Vinvika [58]

Answer:

80 degrees

Step-by-step explanation:

the sides add upp to 180 degrees so 180-70-30=80

3 0
2 years ago
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A handful of chewing gum contains 5 red pieces out of 11. What is the probability that a randomly selected
bezimeni [28]

Find the number of pieces that aren't red, by subtracting the red from the total:

11 - 5 = 6 are not red.

The probability is the number of none red, over the total number of pieces: 6/11

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Answer:

Your blocking people that need help

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Don’t add posts like these as others who need help will have to go through these first

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