You are a researcher studying the lifespan of a certain

Last updated: 3/23/2023

You are a researcher studying the lifespan of a certain species of bacteria A preliminary sample of 40 bacteria reveals a sample mean of 80 hours with a standard deviation of s 4 hours You would like t estimate the mean lifespan for this species of bacteria to within a margin of error of 0 4 hours at a 98 level of confidence What sample size should you gather to achieve a 0 4 hour margin of error Round your answer up to the nearest whole number n bacteria