Homework SourseAn experiment involves selecting a random sample of 285 midd
An experiment involves selecting a random sample of 285 middle managers 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 $2,404. What is the standard error of the mean?
| $142.401 | |
| $16.882 | |
| $8.435 | |
| $2,404 |
Solution
mean=142401+16882+8435+2404/4
actual mean=42530.5
sample mean=35420
error=$7110.5
