Answer:
35 ways
Step-by-step explanation:
Seven juniors to choose three from
7 C 3 = 7! / ( 4! 3!) = 35
Answer:
The percentage of the variability in plant weight is NOT explained by height is
%
Step-by-step explanation:
From the question we are told that
The correlation between height and weight is 
Generally the R-Squared between height and weight is mathematically represented as

substituting values


This R-Squared tells us the percentage of plant weight is accounted by height
and from the calculation we see that it is 56.3%
Now the percentage of plant weight that is not accounted by height is

%
Equation:- 2y-x=10
For L to intersects Y axis then X cordinate must be zero
so put value of X as zero (0) :-

So Y cordinate is equal to 5
Cordinate:- (0,5)