Question

Part A: Use the computer output to determine the LSRL. Identify all the variables used in the equation. (3 points) Part B: What proportion of the variation in makeup sales is explained by its linear relationship to makeup tutorial videos? Explain. (4 points) Part C: Determine if increased makeup sales were caused by online makeup tutorial videos. Explain your reasoning. (3 points)

Answer 1

Follows are the solution to the given point:

Explanation:

please find the correct question:

In choice a:

The smallest square line would be from the production.

`Sales = -7.567857143 + 0.917857143 * Makeup\ Videos.`

Purchases of Cosmetics & Makeup Demo Clips are the factors used in the calculation.

In choice b:

The proportions of its variance of maquillage sales reveal by it's a linear relation to maquillage video tutorials is
`99.53 \ \%`.

In choice c:

Because the vector Cosmetics Demonstration videos are critical with 5.11E-07 p-value, which is less than 0.05 and
`R^2 = 99.53`. It may assume that increasing making-up purchases is attributed to tutorials for online makeup.