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salantis [7]
3 years ago
9

WILL GIVE A BRAINLEST!!!!!!!!!!!!!!!

Mathematics
2 answers:
Dmitrij [34]3 years ago
6 0
The answer is A. The data is a sample, so you can determine every answer with the word 'population' in it to be wrong. 
Monica [59]3 years ago
4 0

Answer with explanation:

Formula to find variance of Population

     (\sigma)^2=(\text{Variance})^2=\frac{(\text{Each variate in the data set}-\text{Mean of the data set})^2}{\text{total number of variate}}

Formula to find variance of a Sample

   (\sigma_{1})^2=(\text{Variance})^2=\frac{(\text{Each variate in the data set}-\text{Mean of the data set})^2}{\text{total number of variate}-1}

The meaning of the word Variance, is how dispersed the variate are from mean.

Option A

The data is a sample and is expected to be more dispersed from the mean.

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A multiple regression model has ___
Salsk061 [2.6K]

Answer:

C. More than one independent variable

Step-by-step explanation:

The difference between linear regression model and multiple regression model is that the linear regression has just one independent variable which is use to determine the dependent variable. While the multiple regression model has at least two or more independent variable which is use to determine the dependent variable.

5 0
3 years ago
Please help thank you !
Musya8 [376]

Answer:

6.6 cm and 14.6 cm

Step-by-step explanation:

(a)

the length of arc AB is calculated as

AB = circumference of circle × fraction of circle

     = 2πr × \frac{95}{360}

     = 2π × 4 × \frac{95}{360}

     = 8π × \frac{95}{360}

     = \frac{8\pi (95)}{360}

     ≈ 6.6 cm ( to the nearest tenth )

(b)

the perimeter (P) of sector AOB is

P = r + r + AB = 4 + 4 + 6.6 = 14.6 cm

5 0
2 years ago
Read 2 more answers
You buy books for 64 cents each, you plan to sell them for 75 cents each. You're left with 100 unsold books, and you lost $12. H
PSYCHO15rus [73]

The number of books sold is 473.

<u>Step-by-step explanation:</u>

  • The original cost of each book = $0.64
  • The selling price of each book = $0.75

The difference between the original price and selling price of the book gives the profit per book.

The profit of one book = Selling price - Original price

Let,

  • The total number of books be 'x'.
  • The number of books sold be 'y'.
  • The unsold books is 100.
  • The total profit is -12 because it was gone to a loss of $12.

Therefore, the equation is formed as

total Profit = 0.75y - 0.64x

⇒ 0.75y - 0.64x = -12 --------(1)

Total books = sold books + unsold books

x = y + 100

⇒ x-y = 100  -------(2)

Substitute x= 100+y in the eq(1),

0.75y - 0.64(100+y) = -12

0.75y - 64 -0.64y = -12

0.11y = -12 +64

y = 52 / 0.11

y = 472.7

y ≅ 473

The number of book sold is 473 books.

The total number of books is (100+473) = 573 books.

8 0
3 years ago
50 PTS MANY POINTS
kari74 [83]

Answer:

B. 1,900

Step-by-step explanation:

3 0
3 years ago
Find the missing measurements.<br><br> Area: ?<br><br> Length: 13 cm<br><br> Width: 15 cm
Shalnov [3]

Answer:

13 x 15 = 195

4 0
3 years ago
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