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
Eduardwww [97]
3 years ago
5

An experiment involves selecting a random sample of 256 middle managers at random for study. one item of interest is their mean

annual income. the sample mean is computed to be $35,420 and the sample standard deviation is $2,050. what is the standard error of the mean?
Mathematics
1 answer:
Nitella [24]3 years ago
7 0
The standard error of the mean is 128.125.

The formula for standard error is:

\sigma_M=\frac{\sigma}{\sqrt{N}}

With our information, we have:

\sigma_M=\frac{2050}{\sqrt{256}}=128.125.
You might be interested in
Help me solve this equation 3x-7=4x
Sauron [17]
Hey!

Let's write it, 3x-7=4x
Add 7 to both sides,
3x-7+7=4x+7
3x=4x+7
Subtract 4x from both sides.
3x-4x=4x+7-4x
-x=7
Since we don't want a negative variable, we have to divide both sides by -1.
\frac{-x}{-1}=\frac{7}{-1}
Our answer would be,
x=-7

Thanks!
-TetraFish
4 0
3 years ago
Read 2 more answers
In the diagram, parallel lines P and Q are cut by transversal R.
Paraphin [41]

Answer:

x=125

Step-by-step explanation:

7 0
3 years ago
3-5b=-32<br><br> Please help!
Inessa05 [86]

Answer:

b=7

Step-by-step explanation:

3-5b=-32

-5b=-32-3

-5b=-35

Divide both sides by -5

b=7

7 0
3 years ago
Read 2 more answers
What is the rate of decay in the following function?<br><br> f(x)=3(67)^x
tigry1 [53]

Answer:

Suppose N is the size of a population of radioactive atoms at a given time t, and dN is the amount by which the population decreases in time dt; then the rate of change is given by the equation dN/dt = −λN, where λ is the decay constant.

5 0
2 years ago
Find the zeros of f(x) = -x^2 + 4x - 3 by using a table and a graph.
ludmilkaskok [199]
1) <span>Enter the missing numeral of the answer 1, 3. Use a number only.
2) </span>f(x) = x^2 - 5x - 6 can be written as <span>f(x) = x^2 - 5x - 6 = (x-1) (x+6)
the zeros are 1 and 6, and the smallest zero is 1,
3) </span>g(x) = x^2 - 8x =<span>g(x) = x(x - 8), so the zeros are 0 and 8, the smallest zero is 0
4) </span>f(x) = x^2 - 7x + 6 can be written as <span>f(x) = x^2 - 7x + 6 = (x-1) (x-6), the zeros are 1 and -6, and the smallest zero is 1
5) </span>g(x) = x^2- 6x - 16 can be written as <span>g(x) = x^2- 6x - 16 = (x+2) (x-8)
the zeros are -2 and 8, the smallest zero is -2</span>
7 0
3 years ago
Other questions:
  • Rotate rectangle ABCD clockwise 90º about the origin. Label A' B' C' D' respectively. What are the coordinates of the new figure
    8·1 answer
  • The football team needs to raise at least $7,000 for new football uniforms. An anonymous donor gave the team $1,250 toward their
    15·1 answer
  • 13+7*12+9= How would I show my work and get the answer to this problem
    9·1 answer
  • tanya purchased 4 hamners for $11.00 each and 7 scewdrivers for $6.65 each write an expresion for the total cost of the tools.th
    15·2 answers
  • What are the coefficients in the expression -8y^ + 12x + 5y + 7
    12·1 answer
  • The first term of a geometric series is -3, the common ratio is 6, and the sum of the series is -4,665. Using a table of values,
    12·1 answer
  • Nooo Linkkks Ok sue i for got how to do perimeter!!!<br><br> umm so like ya know wanna help
    11·2 answers
  • What is the average rate of change from x = 4 to x= 7
    7·1 answer
  • Find the perimeter of the kite​
    9·2 answers
  • A vessel has 4 liters and 500 ml of curd. In how many glasses, each of 25 ml capacity, can it be filled?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!