1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
insens350 [35]
2 years ago
10

a sample of 144 was taken from a population with a standard deviation of 36 inches. In this case the sample mean will be within

how many inches of the population mean 99.7% of thew time?
Mathematics
1 answer:
goldfiish [28.3K]2 years ago
8 0

Answer:

9 inches

Step-by-step explanation:

The population is within 6 standard deviations of the mean with a confidence of 99.7 percent, 3 above and 3 below

 

The standard deviation of the sample mean is equal to the population standard deviation divided by the square root of the sample size

population standard deviation = 36

sample size = 144


standard deviation of the sample mean = 36/ sqrt(144)

                                                                   =36/12

                                                                   =3

The margin of error is  the number of standard deviations above  the mean * the standard deviations

margin of error  = 3 * 3

                           = 9 inches


You might be interested in
What is partial derivative of z=(2x+3y)^10 with respect to x,y?
maw [93]
Not sure if you mean to ask for the first order partial derivatives, one wrt x and the other wrt y, or the second order partial derivative, first wrt x then wrt y. I'll assume the former.

\dfrac\partial{\partial x}(2x+3y)^{10}=10(2x+3y)^9\times2=20(2x+3y)^9

\dfrac\partial{\partial y}(2x+3y)^{10}=10(2x+3y)^9\times3=30(2x+3y)^9

Or, if you actually did want the second order derivative,

\dfrac{\partial^2}{\partial y\partial x}(2x+3y)^{10}=\dfrac\partial{\partial y}\left[20(2x+3y)^9\right]=180(2x+3y)^8\times3=540(2x+3y)^8

and in case you meant the other way around, no need to compute that, as z_{xy}=z_{yx} by Schwarz' theorem (the partial derivatives are guaranteed to be continuous because z is a polynomial).
3 0
2 years ago
Read 2 more answers
Solve 54=y−14 please help meeeeee
Inessa05 [86]

Answer:

y=68

Step-by-step explanation:

54=y−14

54+14=y

68=y

5 0
3 years ago
Evaluate \dfrac j4 4 j ? start fraction, j, divided by, 4, end fraction when j=12j=12j, equals, 12.
cricket20 [7]

We need to evaluate the value of fraction \frac{j}{4}.

We also given j=12.

In order to evaluate the value of fraction \frac{j}{4}, we need to plug j=12.

Plugging j=12, we get

\frac{j}{4}= \frac{12}{4}

We have 12 in numerator and 4 in denominator.

We always divide top number by bottom number.

So, we need to divide 12 by 4.

On dividing 12 by 4 we get 3.

<h3>Therefore, \frac{j}{4} = 3.</h3>
3 0
3 years ago
Read 2 more answers
Solve for the indicated variable.
marta [7]

Answer:

Option (c) "r=\dfrac{q}{4c}-h"

Step-by-step explanation:

The given equation is :

q = c4(h + r)

We need to solve it for r.

Dividing both sides of the given equation by 4c.

\dfrac{q}{4c}=\dfrac{4c}{4c}(h+r)\\\\(h+r)=\dfrac{q}{4c}

Now, subtract h both sides of the equation.

h+r-h=\dfrac{q}{4c}-h\\\\r=\dfrac{q}{4c}-h

Hence, this is the required solution.

3 0
2 years ago
-2y^2-19y+33 trail and error
Alexandra [31]

Answer: (-2y+3)(y+11)


Step-by-step explanation:

33 is 3×11 so expect something like

(y+3)(y+11) = y^2+14y+33

leading term has coefficient -2 so

one factor is like (-2y+__)

Try (-2y+3)(y+11) = -2y^2-19y+33

which happens to be the answer


7 0
3 years ago
Other questions:
  • Mrs. Jones had some white paint and some green paint, and a bunch of wooden cubes. Her class decided to paint the cubes by makin
    7·1 answer
  • Ila invested $42,000 into an account earning 4% compounded annually. She makes no other deposits and does not withdraw any money
    15·1 answer
  • Think about what you learned about New Netherland. Which of these statements are true? Check all the statements that correctly d
    14·1 answer
  • Find angle X on the given figure. m
    11·1 answer
  • Can some one help me with this<br>​
    11·2 answers
  • A Toyota prius drove 208 miles on 5 gallons of gas. how far should it be able to go on a full 11 gallon tank?
    14·2 answers
  • 20 2/3% to fraction?
    6·1 answer
  • A hook in an office storage closet can hold no more than 6 pounds. An order of jumbo paperclips weighs 2 pounds and an order of
    6·2 answers
  • Find the surface area of the composite figure
    9·2 answers
  • Multi step equation help<br><br> 5n - 2 ( 2 -n ) = -7
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!