The linear equation fitted using the data of 7 weeks for a variable y

1.	The linear equation fitted using the data of 7 weeks for a variable y is ŷ = 25.1 – 1.3t. Estimate the value of y for the eighth week.
Answer» ŷ = 25.1 – 1.3t Putting t = 8, we get ŷ = 25.1 – 1.3 (8) = 25.1 – 10.4 = 14.7 Hence, the estimate of y for the eighth week obtain is ŷ = 14.7.

The linear equation fitted using the data of 7 weeks for a variable y is ŷ = 25.1 – 1.3t. Estimate the value of y for the eighth week.

Answer»

ŷ = 25.1 – 1.3t
Putting t = 8, we get
ŷ = 25.1 – 1.3 (8)
= 25.1 – 10.4
= 14.7

Hence, the estimate of y for the eighth week obtain is ŷ = 14.7.