SOLUTION: Suppose that the population standard deviation (o) for a normally distributed standardized test of achievement is known to be 7.20. What would the standard error of the sample mea

Question 85488This question is from textbook elementary statistics in social research
: Suppose that the population standard deviation (o) for a normally distributed standardized test of achievement is known to be 7.20. What would the standard error of the sample mean (o-x)be if we were to draw a random smaple of 16 test scores?
Please help...show the work please. This question is from textbook elementary statistics in social research

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose that the population standard deviation (o) for a normally distributed standardized test of achievement is known to be 7.20. What would the standard error of the sample mean (o-x)be if we were to draw a random smaple of 16 test scores?
-----------------
standard error (SE) = sigma/sqrt(sample size) = 7.2/sqrt16 = 7.2/4 = 1.8
=====================
Cheers,
Stan H.
RELATED QUESTIONS
Suppose that the population standard deviation (𝝈 ) for a normally distributed... (answered by oscargut)

5.7 Suppose that the population standard deviation (sigma) for a normally distributed... (answered by stanbon,ewatrrr)

suspose that the population standard deviation (ơ) for a mormally distributed... (answered by stanbon)

4. scores on an achievement test are known to be normally distributed with a mean of 420... (answered by ewatrrr)

Suppose you have a normally distributed set of data pertaining to a standardized test.... (answered by Fombitz)

The graduate selection committe wants to select the top 10% of applicants. On a... (answered by stanbon)

suppose it is known that in certain large human population cranial length is normally... (answered by ewatrrr)

How do I solve the following problem based on the formula, Z = (x-m)/sd The graduate... (answered by stanbon)

The graduate selection committee wants to select the top 10% of applicants. On a... (answered by stanbon)