Answer:
i think it is 345 but not sure
Step-by-step explanation:
Test statistic = (mean 1 - mean 2) / sqrt( dev1/n1 + dev2/n2)
Mean 1 = $16.75
mean2 = $16.25
dev1 = $1.00
dev2 = $0.90
n1 = 80
n2 = 60
Test stat = (16.75 - 16.25) / sqrt(1/80 + 0.95/60)
Test stat = 3.01
The answer is B. 3.01
If 9kg costs 12$, then a single kg costs around 1.3$
This is done with a simple proportion
9 : 12 = 1 : X
x = 12/9
x = 1.33
Answer:
x = 1, y = -3
Step-by-step explanation:
see graph above ^
It would be like this , this is how you would graph it
