Answer:
the production line did not pass
Step-by-step explanation:
It's B!------------------------------
Answer:
We accept H₀ . We don´t have enough evidence to express the publisher claim is not true
Step by Step explanation:
We must evaluate if the mean of the price of college textbooks is different from the value claimed by the publisher
n < 30 then we must use t - distrbution
degree of freedom n - 1 df = 22 - 1 df = 21
As the question mentions " different " that means, a two-tail test
At 0,01 significance level α = 0,01 α/2 = 0,005
and t(c) = 2,831
Test Hypothesis
Null Hypothesis H₀ μ = μ₀
Alternative hypothesis Hₐ μ ≠ μ₀
To calculate t(s)
t(s) = ( μ - μ₀ ) /σ/√n
t(s) = ( 433,50 - 385 ) / 86,92 / √22
t(s) = 2,6171
Comparing t(c) and t(s)
t(s) < t(c)
Then t(s) is in the acceptance region we accept H₀. We don´t have enough evidence to claim that mean price differs from publisher claim
Answer:
.
Step-by-step explanation:
(3 , -4) ; slope(m) = 2/3
y - y1 = m (x -x1)
![y - [-4] = \frac{2}{3}(x - 3)\\\\y + 4 = \frac{2}{3}x - 3*\frac{2}{3}\\\\y +4 = \frac{2}{3}x-2\\\\ y = \frac{2}{3}x - 2 - 4\\\\ y = \frac{2}{3}x - 6](https://tex.z-dn.net/?f=y%20-%20%5B-4%5D%20%3D%20%5Cfrac%7B2%7D%7B3%7D%28x%20-%203%29%5C%5C%5C%5Cy%20%2B%204%20%3D%20%5Cfrac%7B2%7D%7B3%7Dx%20-%203%2A%5Cfrac%7B2%7D%7B3%7D%5C%5C%5C%5Cy%20%2B4%20%3D%20%5Cfrac%7B2%7D%7B3%7Dx-2%5C%5C%5C%5C%20%20y%20%3D%20%5Cfrac%7B2%7D%7B3%7Dx%20-%202%20-%204%5C%5C%5C%5C%20%20%20y%20%3D%20%5Cfrac%7B2%7D%7B3%7Dx%20-%206)
Answer:
$471.60
Step-by-step explanation:
The double time rate is not specified in the question. But I will assume it's 2 times the normal rate. Therefore...
13.10 x 20 + 8 x (13.10 x 2)
Answer = $471.60
