Answer:
Step-by-step explanation:
Given that for a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears.
r = linear correlation coeff = 0.952
H_0: r =0\\
H_1 :r\neq 0
(Two tailed test)
r difference = 0.952
n=8
Std error = \sqrt{\frac{1-r^2}{n-2} } =0.12496
Test statistic t = 0.952/0.12496 = 7.618
Alpha = 0.05
df = 6
p value = 0.000267
This implies H0 is rejected.
There exists a linear relation between the variables and r cannot be 0
0.952^2 = 0.906=90.6% of variation in weight can be explained by the linear relationship between weight and chest size
Answer:
y=mx+bx
Step-by-step explanation:
You could either use (7,19) or (9,29) to find the equation....
Y=mx+b
You plug in you x and y, then we are trying to solve for b
x=7, y=19
19=m(7)+b
7m+b=19
-7m -7m
b= 19 - 7m
Y=7m+1
X² -64=0
+64
x²=64
√x=√64
x=8
Answer:
6/25
Step-by-step explanation:
The area of the square is 4 × 4 which equals 16cm^2. The area of a circle is π × radius^2, so using 3.14 as pi we can say that (3.14 × 16)/4 is the area of the quarter circle. This comes to 12.56, so added to 16 you get 28.56cm^2 as your answer, which can be rounded to 28.6cm^2. I hope this helps!
