researcher wishes to​ estimate, with 99 style=”background-color:transparent;color:rgb(0,0,0);”>​% ​confidence, the population proportion of adults who are confident with their​ country’s banking system. His estimate must be accurate within 5​% of the population proportion.A. NO preliminary estimate is available. Find the minimum sample size needed.B. Find the minimum sample size​ needed, using a prior study that found that 26​% of the respondents said they are confident with their​ country’s banking system.
1. What is the minimum sample size needed assuming that no prior information is​ available? N=2. What is the minimum sample size needed using a prior study that found that 26​% of the respondents said they are confident with their​ country’s banking​ system?N=

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