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Lady bird [3.3K]
3 years ago
10

Consider this population data set: 4,6,7, 11, 12, 18, 26, 23, 14, 31, 22, and 12. The values 11, 31, 22, and 12 constitute a ran

dom sample
drawn from the data set.
The sample mean is more than the population mean by
Mathematics
1 answer:
Andrej [43]3 years ago
6 0

Answer:

The population mean is the sum of the 12 data set values divided by 12:

4 + 6 + 7 + 11 + 12 + 18 + 26 + 23 + 14 + 31 + 22 + 12 = 186.

Therefore the population mean = 186/12 = 15.5.

The sample mean is the sum of the 4 sample values divided by 4:

11 + 31 + 22 + 12 = 76.

Therefore the sample mean = 76/4 = 19.

The sample mean is more than the population mean by 19 - 15.5 = 3.5.

hope it helped

Step-by-step explanation:

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2z-6

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2(z-3)

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2 years ago
A área do círculo mede 196 π cm². Qual a medida do seu raio?
AleksandrR [38]

Hey there!!

  • The area of a circle = πr²

The area is given as 196π

Hence,

196π = πr²

... r²= 196

... r = √196

... r = 14

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2 years ago
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algol [13]
The points you are looking for are the midpoints of segments JL and JK.
J(-2, -1), K(4, -5), L(0, -5)

The midpoint of segment JL is

(-2 + 0)/2, (-1 + (-5))/2) = (-2/2, -6/2) = (-1, -3)

The midpoint of segment JK is

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2 years ago
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ki77a [65]

Answer:

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Zarrin [17]
Let the number of chemistry books be x and the number of calculus books be y
total number of books in each case is:
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2 years ago
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