Answer:
We conclude that the actual average cost per workbook is higher than $27.50.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $27.50
Sample mean,
= $28.90
Sample size, n = 44
Alpha, α = 0.05
Population standard deviation, σ = $5.00
First, we design the null and the alternate hypothesis
We use one-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We reject the null hypothesis and accept the alternate hypothesis.
Thus, we conclude that the actual average cost per workbook is higher than $27.50.
<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em> </em><em>⤴</em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em>
Answer:
Yep.
Step-by-step explanation:
It's the equation of the circle of radius 4 units.
3 decimeter is the same as 30 centimeters, because 1 decimeter=10 centimeter, so if you convert 3 decimeter into centimeters, you'll get 30, 3×10=30cm
30cm=30cm, so your answer is both are equal.
hope this helps...........
Answer:
![q=10p](https://tex.z-dn.net/?f=q%3D10p)
Step-by-step explanation:
According to the given table, the variables have a linear relation, because there's a constant change involved.
Notice that p-variable increases by one unit, while q-variable increases by 10 units. That means the ratio of change is
![r=\frac{\Delta q}{\Delta p}=\frac{10}{1}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B%5CDelta%20q%7D%7B%5CDelta%20p%7D%3D%5Cfrac%7B10%7D%7B1%7D)
Then, we use one pair of elements, like (3,30), and the point-slope formula to find the equations.
![q-q_{1} =m(p-p_{1} )\\q-30=10(p-3)\\q=10p-30+30\\q=10p](https://tex.z-dn.net/?f=q-q_%7B1%7D%20%3Dm%28p-p_%7B1%7D%20%29%5C%5Cq-30%3D10%28p-3%29%5C%5Cq%3D10p-30%2B30%5C%5Cq%3D10p)
Therfore, the equation that represents the table is ![q=10p](https://tex.z-dn.net/?f=q%3D10p)