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alekssr [168]
3 years ago
11

For the year 2010, 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal

income tax return. The mean amount of deductions for this population of taxpayers was $16,642. Assume that the standard deviation is σ = $2,440. If required, round your answer to two decimal places.
(a) What are the sampling distributions of x for itemized deductions for this population of taxpayers for each of the following sample sizes: 30, 50, 100, and 400?
(b) What is the advantage of a larger sample size when attempting to estimate the population mean?
Mathematics
1 answer:
Lapatulllka [165]3 years ago
7 0

Answer:a

Step-by-step explanation:

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Ms. Reynolds has a system of 10 sprinklers that water her entire lawn. The sprinklers run one at a time, and each runs for the s
Flauer [41]
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3 0
3 years ago
The app isn't letting me post the picture alone so this is just here so I can post the picture ;-;​
labwork [276]

Answer:

  (x, y) = (0, -2248)

Step-by-step explanation:

<u>Substitution</u>

Substitute for y:

  300x -2248 = 350x -2248

  0 = 50x . . . . . . . . add 2248-300x to both sides

  x = 0

  y = 300·0 -2248

The solution is (x, y) = (0, -2248).

__

<u>Elimination</u>

Subtract the first equation from the second.

  (y) -(y) = (350x -2248) -(300x -2248)

  0 = 50x

  x = 0

  y = 300·0 -2248

The solution is (x, y) = (0, -2248).

__

<em>Additional comment</em>

If you think for a bit about what the graph looks like, you realize both lines cross at their y-intercept, (0, -2248). That point of intersection is the solution to the system of equations.

7 0
2 years ago
I think ik the answer but I’m not so can someone help me
Pavlova-9 [17]

Answer:

25%

Step-by-step explanation:

I would think its 25

hope this helps, good luck :)

8 0
3 years ago
Read 2 more answers
How many solutions does this linear system have?
alexira [117]
The answer here is no solution
5 0
1 year ago
A triangular prism and two nets are shown:
lilavasa [31]

Answer:

Net for the prism will have 3 rectangles with dimensions 5 by 15, 12 by 15 , and 13 by 15, and 2 triangles with legs 5 inches and 12 inches.

The correct net is net a.

Surface area = sum of areas of the three rectangles and sum of the two triangles.

SA = (5 x 15) + (12 x 15) + (13 x 15) + (5 x 12) = 75 + 180 + 195 + 60 = 510 square inches.

Step-by-step explanation:

Hope this helped

4 0
2 years ago
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