검색하신 단어 : (1%20point)%20a.%20A%20random%20sample%20of%2064%0D%0A%20observations%20taken%20from%20a%20population%20produced%20a%20sample%20mean%20equal%20to%2056.68%0D%0A%20and%20a%20standard%20deviation%20equal%20to%208.8%0D%0A.%20Make%20a%2090%0D%0A%20%%20confidence%20interval%20for%20%CE%BC%0D%0A.%0D%0A%0D%0A%20%20%20%20%0D%0A%20.%0D%0A%0D%0Ab.%20Another%20random%20sample%20of%2064%0D%0A%20observations%20taken%20from%20a%20population%20produced%20a%20sample%20mean%20equal%20to%2055.36%0D%0A%20and%20a%20standard%20deviation%20equal%20to%207.7%0D%0A.%20Make%20a%2090%0D%0A%20%%20confidence%20interval%20for%20%CE%BC%0D%0A.%0D%0A%0D%0A%20%20%20%20%0D%0A%20.%0D%0A%0D%0Ac.%20A%20third%20random%20sample%20of%2064%0D%0A%20observations%20taken%20from%20a%20population%20produced%20a%20sample%20mean%20equal%20to%2055.56%0D%0A%20and%20a%20standard%20deviation%20equal%20to%207.8%0D%0A.%20Make%20a%2090%0D%0A%20%%20confidence%20interval%20for%20%CE%BC%0D%0A.