Question
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample...
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 40 bacteria reveals a sample mean of ¯x=78x¯=78 hours with a standard deviation of s=6s=6 hours. You would like to estimate the mean lifespan for this species of bacteria to within a margin of error of 0.45 hours at a 95% level of confidence.
What sample size should you gather to achieve a 0.45 hour margin of error? Round your answer up to the nearest whole number.
n = bacteria
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Answer #1
TOPIC:Finding the required sample size for the given confidence level and the allowable margin of error.
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