An experiment involves selecting a random sample of 256 middle managers for study. one item of interest is their annual income. the sample mean is computed to be $35,420, and the sample standard deviation is $2,050. what is the sample standard error of the mean?

The solution would be like this for this specific problem:

Given:

N = 256

Sample Mean = $35,420

Standard Deviation = $2,050

Find:

Standard Error of Mean = ?

The formula for the standard error of the mean is:

Om = o / sqrt(N)

Om = the standard deviation of the sampling distribution of the mean

where o = standard deviation of the sampling distribution of a statistic

N = sample size

So substituting the formula with the given:

Om = $2,050 / sqrt(256)

Om = $2,050 / 16

= $128.125

Therefore, the sample standard error of the mean is $128.125.

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

1. 2

2. 11

3. 5

4. 6

5. 7

6. 5

7. -1

8. 1

step-by-step explanation: