You are a researcher studying the lifespan of a certain species of bacteria. Apreliminary sample of 30 bacteria reveals a sample mean of to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.75 hours at a 95% level of confidence. 66 hours with a standard deviation of s = = 6.6 hours. You would like %3D What sample size should you gather to achieve a 0.75 hour margin of error? Round your answer up to the nearest whole number. bacteria > Next Question

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