SOLUTION: tate cooperative department is performing a survey to determine the annual salary earned by the managers numbering 3000 in the cooperative sector within the state. how large a samp

Algebra.Com
Question 1197514: tate cooperative department is performing a survey to determine the annual salary earned by the managers numbering 3000 in the cooperative sector within the state. how large a sample size it should take in order to estimate the mean annual earnings within plus and minus 1000 and at 95 % confidence level the standard deviation of annual earning of the entire population is known to be 3000
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!

Hi  
 95% confident  ⇒  z = 1.96 (See below)
σ  = 3000,   ME = 1000
How large of a sample size is required? ME large ⇒ expect small sample size

0r
n = 
n =  = 34.5744  0r sample Size = 35 (always round Up)

 = CI	z = value
90%	z =1.645    
92%	z = 1.751
95%	z = 1.96   Invnorm(.975)  2-sided (.95 + .05/2 = .975 )
98%	z = 2.326  
99%	z = 2.576
Wish You the Best in your Studies.

RELATED QUESTIONS

THE LINK FOR THE CONTINGENCY TABLE :... (answered by ElectricPavlov)
The median annual salary of 121 members of a department is $42,650. How many of the... (answered by rfer)
The annual interest on a $5000 investment exceeds the interest earned on a $3000... (answered by addingup,MathTherapy)
The annual interest on a $6000 investment exceeds the interest earned on a $3000... (answered by mananth,addingup)
the annual interest on a 9000 investment exceeds the interest earned on a 3000 investment (answered by Theo)
5. The average salary of senior managers in the construction industry is $180,000 per... (answered by stanbon)
In a Nationalised bank Mahesh bhai has deposited rupees 20000 at some rate of interest he (answered by jhasumit5999@gmai.com)
a researcher reports that the ave. salary of sales managers has a mean salary of 43, 800... (answered by stanbon)
The average salary of management at a factory is $58,000 while the hourly workers have a... (answered by stanbon)