The starting salary of business students in a university is known to be normally distributed. A random sample of 18 business students results in a mean salary of $46,500 with a standard deviation of $10,200. Construct the 90% confidence interval for the mean starting salary of business students in this university.
A) 46,500 ± 1.330(10,200/ )
B) 46,500 ± 1.645(10,200/ )
C) 46,500 ± 1.734(10,200/ )
D) 46,500 ± 1.740(10,200/ )

Question

The starting salary of business students in a university is known to be normally distributed. A random sample of 18 business students results in a mean salary of $46,500 with a standard deviation of $10,200. Construct the 90% confidence interval for the mean starting salary of business students in this university.
A) 46,500 ± 1.330(10,200/ ) 
B) 46,500 ± 1.645(10,200/ ) 
C) 46,500 ± 1.734(10,200/ ) 
D) 46,500 ± 1.740(10,200/ )

Quizplus · Accepted Answer

The Answer of The starting salary of business students in a university is known to be normally distributed. A random sample of 18 business students results in a mean salary of $46,500 with a standard deviation of $10,200. Construct the 90% confidence interval for the mean starting salary of business students in this university.
A) 46,500 ± 1.330(10,200/ ) 
B) 46,500 ± 1.645(10,200/ ) 
C) 46,500 ± 1.734(10,200/ ) 
D) 46,500 ± 1.740(10,200/ )

The Starting Salary of Business Students in a University Is