dse 2016 doubt

[Rajesh]

please help me out getting its solution..

[Algaeconomics]

Hey is the ans C??

[Rajesh]

yes, its c , plzz explain krdo..i thought ki t and F values were required to solve this ques, which i was unable to get..

[Algaeconomics]

Hey its given all the estimated coefficients are significant.
Tujhe konse option mein doubt hai??

[Rajesh]

my doubt was in option d:
getting Y hat(at Xi=490)= 292
and Y hat(at Xi=510)= 297..
since these values seems closer to each other, so we assumed that they are within 5% level(or calculated somehow)?
(got rest whole ques)

[Algaeconomics]

Hey 5% of each other means
297-292/292 = 0.017
so that is less than 5%
That is why D option is right!

[Rajesh]

oh, Thankyou for the correct interpretation Alibaba:)

[Algaeconomics]

:)