Answer:
x= 5.5 y=2.25
Step-by-step explanation:
5(10 - 2y) -6y=14
50-10y-6y=14
50- 16y=14
-16y=-36
divide by negtivve # to get positive #
y=2.25
substiue
x+ 2(2.25) =10
x+4.5=10
x=5.5
Answer:
Step-by-step explanation:
The average weight of a package of rolled oats is supposed to be at least 18 ounces
Null hypothesis: u >= 18
Alternative: u < 18
Using the t-test formula, we have
t = x-u/ (sd/√n)
Where x is 17.78, u = 18, sd = 0.41 and n = 18
t = 17.78-18 / (0.41/√18)
t = -0.22 / (0.41/4.2426)
t = -0.22/ 0.0966
t = -2.277
Since, this is a left tailed test, at a significance level of 0.05, the p value is 0.01139. Since the p value is less than 0.05, we will reject the null hypothesis and conclusion that the true mean smaller than the actual specification.
Answer:
The ratio is 
Step-by-step explanation:
We have
Is it a multiplication, a division or..What?
