SOLUTION: Find the minimum sample size n needed to estimate μ for the given values of​ c, σ​, and E. c=0.90​, σ=8.8​, and E=2 Assume that a prelimina

Algebra ->  Probability-and-statistics -> SOLUTION: Find the minimum sample size n needed to estimate μ for the given values of​ c, σ​, and E. c=0.90​, σ=8.8​, and E=2 Assume that a prelimina      Log On


   

Question 1059758: Find the minimum sample size n needed to estimate μ for the given values of​ c, σ​, and E.
c=0.90​, σ=8.8​, and E=2
Assume that a preliminary sample has at least 30 members.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
alpha=0.1
So z%5Bc%5D=1.645
n=%28%28z%5Bc%5D%2Asigma%29%2FE%29%5E2
n=%28%281.645%2A8.8%29%2F2%29%5E2
n=52.39
or rounding up,
n=53