Question

the graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250 data x y 5 271 10 464 15 820 20 985 25 1124 30 1501 35 1718 40 2076 45 2257 linear regression y ≈ 50.307x + 11.444; r ≈ 0.996 -1 ≤ x ≤ 90 -100 ≤ y ≤ 4000 resize window to fit data window

Explanation:

Step1: Identify the linear - regression equation

The linear - regression equation is $y = 50.307x+11.444$.

Step2: Substitute $x = 60$ into the equation

Substitute $x = 60$ into $y = 50.307x+11.444$. Then $y=50.307\times60 + 11.444$.
First, calculate $50.307\times60=3018.42$.
Then, $y=3018.42+11.444 = 3029.864\approx3000$.

Answer:

3,000