Answer:
The first answer is 10.2 for the first column
The second answer is 3.6 for the second column
Step-by-step explanation:
These are the correct answers though i do not have a step by step explanation sorry
To loose 5 pounds a week, a person should be active for 30.91 weekly hours and a person who is active for 8 hours weekly could expect to lose 10.65 pounds.
In statistics, a regression equation is used to determine whether or not there is a link between two sets of data.
From the figure shown below:
y = 0.02x^2 + 1.07x + 0.81 is the best fit for the data
Weight to be lost = 5 pounds a week
5 = 0.02x^2 + 1.07x + 0.81
0.02x^2 + 1.07x + (0.81 - 5) = 0
0.02x^2 + 1.07x - 4.19 = 0
Applying the quadratic formula:
x = (-b ± √(b^2 - 4ac))/2a
x = (-0.02 ± √(1.07^2 + 4(0.02)(4.19))/2*0.02
x = (-0.02 ± √1.4801)/0.04
x = (-0.02 ± 1.21)/0.04
x = 30.91 weekly hours
No. of hours the person is active = 8 hours
y = 0.02x^2 + 1.07x + 0.81
y = 0.02(8)^2 + 1.07(8) + 0.81
y = 0.02*(64) + 8.56 + 0.81
y = 10.65 pounds
Learn more about regression on:
https://brainly.com/question/25987747
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