You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample...

Transcribed Image Text:

You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 30 bacteria reveals a sample mean of = 78 hours with a standard deviation of 8 = 7 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.5 hours at a 90% level of confidence. What sample size should you gather to achieve a 0.5 hour margin of error? Round your answer up to the nearest whole number. n = bacteria You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 30 bacteria reveals a sample mean of = 78 hours with a standard deviation of 8 = 7 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.5 hours at a 90% level of confidence. What sample size should you gather to achieve a 0.5 hour margin of error? Round your answer up to the nearest whole number. n = bacteria

Answer rating: 100% (QA)

To determine the sample size needed to achieve a desired margin of err... View the full answer