Question

using the regression calculator to make a prediction
answer the questions based on the results of the t - shirt sales analysis shown by the regression calculator.
if the t - shirts are priced at $13 each, what is a reasonable prediction for the number sold?
10 t - shirts
15 t - shirts
18 t - shirts
20 t - shirts

Explanation:

Step1: Locate \(x = 13\) on the x - axis (price per t - shirt)

Move vertically from \(x = 13\) until intersecting the regression line.

Step2: Read the y - value (number of t - shirts sold)

From the graph, when \(x = 13\), the corresponding \(y\) - value (number of t - shirts sold) is closest to 18.

Answer:

18 t - shirts