Answer
MULTIPLY 2.2 & 5.5
Step-by-step explanation:
Average thickness of book = Total thickness/mo. of books
= 28 cm/ 10
= 2.8 cm
Thus, on average, each book has 2.8 cm thickness.
Answer:
x=25
Step-by-step explanation:
The area of a traingle is 180 degrees, so we subtract 30 and 50 from 180. we are then left with 100 degrees, divide by 4 and we get that x=25.
The regression equation is calculated as: ŷ = -0.99299X + 26.39918
<h3>How to solve for the regression equation</h3>
We have these data for the x axis
12 15 20 22 15 8 6 17
These are the values for the y axis
17 15 6 7 6 18 21 7
Sum of X = 115
Sum of Y = 97
Mean X = 14.375
Mean Y = 12.125
Sum of squares (SSX) = 213.875
Sum of products (SP) = -212.375
Regression Equation = ŷ = bX + a
b = SP/SSX = -212.38/213.88 = -0.99299
a = MY - bMX = 12.13 - (-0.99*14.38) = 26.39918
ŷ = -0.99299X + 26.39918
These values where inputted into a regression analysis calculator and the output is ŷ = -0.99299X + 26.39918
Read more on regression equation here:
brainly.com/question/26843436
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