Question

The equation used to predict how many days it takes a 15-year old to read the first Harry Potter book is ŷ = 1.5 + 2.82x1 – 1.04x2 days, where x1 is the weekly hours of other activities and x2 is the reading grade level. Use this equation to predict how many days it will take to read this book for someone with 11.7 weekly hours of other activities and a 10.1 reading grade level.13.16 days20.92 days23.99 days17.81 days

Answer 1

Okay, here we have this:

Considering the provided equation and information, we are going to calculate the requeste time in days, so we obtain the following:

Entonces lo que haremos será reemplazado en la ecuación con los valores dados para x1 y x2, y así hallaremos la cantidad total de dias, entonces tenemos:

x1=11.7

x2=10.1

ŷ = 1.5 + 2.82x1 – 1.04x2

Replacing:

ŷ = 1.5 + 2.82(11.7) – 1.04(10.1)

ŷ = 1.5 + 32.994 – 10.504

ŷ = 23.99

Finally we obtain that the correct answer is the third option.