Answer:
7.5
Step-by-step explanation:
3x+4y=36y=-1/2+8=
Hey there!
First, let's list the factors of 40:
1 x 40, 2 x 20, 4 x 10, 5 x 8,
We need to figure out which pair of factors has a sum of 13.
1 + 40 = 41 --> Nope
2 + 20 = 22 --> Nope
4 + 10 = 14 --> Nope
5 + 8 = 13 --> Yes!
The two numbers that have a product of 40 and a sum of 13 are 5 and 8.
Hope this helps!
I don’t know exactly what your asking but x = 3
Answer:
(a) The manufacturer's claim is NOT overstated.
(b) The assumption of a normal population might be doubtful because the hourly distribution might vary during the day.
Step-by-step explanation:
(a) Let's use one-tailed Hypothesis Testing with:
: the population average is 530
α = 0.05
sample number n = 16
population average = 530
sample average μ = 510
sample standard deviation σ = 50
If z < 1.645 then the hypothesis is valid.
Let's calculate z = =
Given that 1.6 < 1.645 then the hypothesis is valid.
Thus the manufacturer's claim is NOT overstated
(b) The hourly distribution might vary along the day. This is why the population might be not necessarily normal.