SOLUTION: Find the minimum sample size n needed to estimate u for the given values of​ c,o ​, and E.
c=0.​95 , o=9.7 ​, and E=1
Assume that a preliminary sample has at least 30
Hi,
c=0.​95 , o=9.7 ​, and E=1
ME =
n = = 361.4+ 0r 362 is the sample size needed
= CI z = value
90% z =1.645
92% z = 1.751
95% z = 1.96
98% z = 2.326
99% z = 2.576