Mathematics, 11.11.2020 18:00 hmu323
A random sample is made of 256 middle managers concerning their annual incomes. The sample mean is computed to be $35,420. If the population standard deviation is $2,050. What is the standard error of the mean?
a. $128.125
b. $138.36
c. $2.050
d. $8.01
Answers: 1
, where 
= population standard deviation , n= sample size.
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A random sample is made of 256 middle managers concerning their annual incomes. The sample mean is c...
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