![789944](/avatars/40165.jpg)
789944
28.12.2021 •
Mathematics
true false The marketing manager for a nationally franchised lawn service company would like to study the characteristics that differentiate home owners who do and do not have a lawn service. A random sample of 30 home owners located in a suburban area near a large city was selected; 11 did not have a lawn service (code 0) and 19 had a lawn service (code 1). Additional information available concerning these 30 home owners includes family income (Income, in thousands of dollars) and lawn size (Lawn Size, in thousands of square feet). The PHStat output is given below: True or False: The null hypothesis that the model is a good-fitting model cannot be rejected when allowing for a 5% probability of making a type I error.
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Ответ:
Volume of cylinder(V) is given by:
where, r is the radius of the cylinder and h is the height of the cylinder
From the diagram:
Diameter of a pipe (d) = 10 cm
height of the pipe(h) = 2m
Use conversion:
1 m = 100 cm
then
2m = 200 cm
⇒h = 200 cm
Since, a pipe is in the form of cylinder.
We have to find the volume of a pipe.
We know that:
⇒![10 = 2r](/tpl/images/1198/0969/5324f.png)
Divide both sides by 2 we get;
5 = r
or
r = 5 cm
Substitute the given values and use π = 3.14. in [1] we have;
Simplify:
Therefore, the volume of a pipe in cm³ is, 15700