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Jwjajhagagsghsb hajsisisjsvcslkv s hausjshsbvs Vshskskkskhs Please do it quickly You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample

Jwjajhagagsghsb hajsisisjsvcslkv s hausjshsbvs
Vshskskkskhs
Please do it quickly
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 30 bacteria reveals a sample mean of 2 - 70 hours with a standard deviation of # = 6.6 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.55 hours at a 90% level of confidence. What sample size should you gather to achieve a 0.55 hour margin of error? Round your answer up to the nearest whole number. bacteria

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