Question

You conduct a simple linear regression analysis which shows that the number of hours spent learning a foreign language (y) is significantly positively correlated with the number of words remembered (x). The regression equation is y = 0.16 + 0.7x. How many hours would someone need to revise to learn 70 words?

Answer 1

Using the regression equation, it is found that someone would need 49.16 hours to to revise to learn 70 words.

What is the regression equation?

The equation that gives the number of hours y needed to learn x words of a foreign language is:

y = 0.16 + 0.7x

In this problem, we want to learn 70 words, hence x = 70 and:

y = 0.16 + 0.7(70) = 0.16 + 49 = 49.16.

Someone would need 49.16 hours to to revise to learn 70 words.

More can be learned about regression equations at https://brainly.com/question/25987747