Answer:
B.
Step-by-step explanation:
In the attached file
Answer:
99% CI for the intercept (b₀) [173.29; 1172.01]dollars
Step-by-step explanation:
Hello!
You have the information of two variables
Y: price of a bycicle (dollars)
X: Weight of a bycicle (kilograms)
The estimated regression equation is
^Y= 672.65 - 1.56X
(191.4) (0.28)
Assuming that 191.4 is the estimated standard deviation of the intercept and 0.28 corresponds to the estimated standard deviation of the slope. The statistic you can use to estimate the intercept is a student's t.
99% CI for the intercept (b₀):
b₀ ± tₙ₋₂;1-α * Sb₀
tₙ₋₂;1-α= t₁₄₈;₀.₉₉₅= 2.609
672.65 ± (2.609*191.4)
[173.2874; 1172.0126]dollars
I hope it helps!
One marker would cost approx. $0.03
Answer:
y=2x-4 is linear while the other is quadratic.
