Question
.3.19-T Question Help A researcher wishes to es mate, with 99% confidence, the ulation proportion of adults who are confident with their country's banking system. His estimate must be accurate within 4% of the population proportion (a) No preliminary estimate is available Find the minimum sample size needed Find the minimum sample size needed, using a p or study that found that 32 % of the respondents said they are confident with their country's banking system, (c) Compare the results from parts (a) and (b) (a) What is the minimum sample size needed assuming that no prior information is available? n T (Round up to the nearest whole number as needed) Enter your answer in he answer box and then chicx Check Ansiwer remaning o see what to study next go to your Shud an
Explanation / Answer
a) for no estimate p=0.5
for 99% CI ; z =2.5758
margin of error E =0.04
hence sample size n=p(1-p)*(z/E)2 =1037
b) here p=0.32
sample size n=p(1-p)*(z/E)2 =903
c)for no prior estimate required sample size is greater,
