Answer:
t = 21d
Step-by-step explanation:
Here tension and distance are denoted t by d and respectively. Since t varies directly with d , then the relation between t and d is k=td Given that, for the tension 42 pounds, the spring is stretched 2 inches. Substituting t = 42 and d= 2 into t = kd find the value of k . Therefore,
42= K (2)
K= 21
Thus the relationship is t = 21d
(Hope this helps can I pls have brainlist (crown)☺️)
Answer:
Step-by-step explanation:
n = sample size = 5
a) Let us determine the sum
Now we can determine
The estimate b of the slope β is the ratio of and
The mean is the sum of all value divide by number of values
The estimate a of the intercept is
General least square equation;
replace alpha by a = 3 and beta by b = 0.67 in general least equation
y = a + bx
195.9 + 0.67x
b)
<em>Scatter plot is shown in the attached file</em>
x is on the horizontal axis
y is n the vertical axis
The degree of freedom of regression is 1
because we use one variable s predictor variable
The degree of freedom of error is the sample size n decrease by 2
Total df is equal to the sum of seperate degree of freedom dfR and dfE
total df = 1 +3 4
Total SS =Syy= 45007.2
SSE + Total SS = SSR
= 45007.2 - 43146.9296
= 1860.2705
