If the population deviation is known and we wish to estimate the population mean with 90% confidence, what is the appropriate critical value z to use?
A) 1.28
B) 1.645
C) 1.96
D) 2.33
E) 2.58

Question

If the population deviation  is known and we wish to estimate the population mean  with 90% confidence, what is the appropriate critical value z to use?
A) 1.28 
B) 1.645 
C) 1.96 
D) 2.33 
E) 2.58

Quizplus · Accepted Answer

The Answer of If the population deviation  is known and we wish to estimate the population mean  with 90% confidence, what is the appropriate critical value z to use?
A) 1.28 
B) 1.645 
C) 1.96 
D) 2.33 
E) 2.58

If the Population Deviation Is Known and We Wish