The lifetime of African Cichlids is unknown but the sample of 75 cichlids were taken and its mean life time was 5.2 years with a margin error of 420...

The lifetime of African Cichlids is unknown but the sample of 75 cichlids were taken and its mean life time was 5.2 years with a margin error of 420 days for 95% confidence.a) What is the 95% confidence interval for the lifetime of the African fish