Question

I submitted the question... see picture.
letter (d) x=50 calories

I predicted the value of y for x=50 to be 169.236
but I was told it's wrong

what is the answer?

Sta https://www.mathxl.com/Student/PlayerHomework.aspx?homework ld-5129545 58&questionld-3&flushed-false&icld-53098788back-DoAssignments.a... Q Applied Managerial Statistics-HERNANDEZ Homework: Week 2: Homework Score: 0 of 3 pts 9.2.21-T Find the equation of the regression ine for the given data. Then construct a scatter plot of the data and draw the regression line. (Each pair of variables has a significant correlation ) Then use the regression equation to predict the value of y for each of the Joan Bennani | 1/14/19 8:00 10 of 15 (9 complete) HW Score: 65%, 26 of Question Help given x-values, if meaningtul. The caloric content and the sodium content (in milligrams) for 6 beet hot dogs are shown in the table below alories, x Sodium, y 160 410 180 | 460 120 340 130 360 80 240 190 520 (a) x 170 calories (c) x = 150 calories (b) x (d) 90 calories 50 calories Find the regression equation. Round to three decimal places as needed) Enter your answer in the edi fields and then click Check Answer 9-08 PM emalning 吕t 0 Type hereto! search

Answer 1

Solution: We can use excel to find the equation of the regression line. The excel output is given below:

Therefore, the regression equation is:

$\hat{y}=2.348x+51.836$

Now to find the predicted value of x = 50, we have:

$\hat{y}=2.348 \times 50+51.836$

  $=169.236$

It is the same answer that you have got, the reason for getting it wrong may be due to rounding. Please round your answer as per the requirement.

If you still get it wrong, please try to use the below equation:

$\hat{y}=2.3476563 \times 50 +51.8359375$

  $=169.219$