Answer:
Total number of copies sold till date are 381522.
Step-by-step explanation:
It is given in the question the book sold 35100 copies in its first month of release and this number is 9.2% of the number of copies sold till date.
To find is how many copies have been sold.
Let the total number of copies sold be = A
Therefore 9.2% × A = 35100
A = 381521.74 ≅381522 copies
The value of a = 2.17 and b = 1.95.
<h3>What is regression line?</h3>A regression line is a graphic representation of the regression equation expressing the hypothesized relationship between an outcome or dependent variable and one or more predictors or independent variables;
y=
Correlation:
r=0.964
R-squared:
r²=0.9292
Hence, value of a and b is 2.17 and 1.95.
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