Answer:
с. A matched pairs t-interval for a mean difference.
Step-by-step explanation:
With the sample, we will have possession of the sample mean and of the sample standard deviation, which means that the t-distribution will be used.
We want to find the mean number of back problems for each sample, and estimate the difference. Since the groups are similar, with only the positions in which they work being different, we have matched pairs. So the correct answer is given by option c.
Answer:
Step-by-step explanation:
Your answer
303.45
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0.5 of a mile - since 5,280ft = 1 mile and half of 5,280 is 2,640
You would need to calculate the original cost with the tax then find the tip because the tip is always a percent out of the total cost including tax
Answer:
3.5%
Step-by-step explanation:
The volume of a cylinder = 
<em>r</em> = radius of cylinder,
<em>h</em> = height of cylinder
For the non-optimal can,
<em>r</em> = 2.75/2 = 1.375
<em>h</em> = 5.0

<em />
For the optimal can,
<em>d</em>/<em>h</em> = 1,
<em>d</em> = <em>h</em>
2<em>r </em>=<em> h</em>
<em>r</em> = h/2

They have the same volume.
<em />
<em />

(This is the height of the optimal can)
(This is the radius of the optimal can)
The area of a cylinder is
<em />
<em />
For the non-optimal can,

For the optimal can,

Amount of aluminum saved, as a percentage of the amount used to make the optimal cans = 