Using a 98% confidence level, determine a confidence interval for the mean lifespan of all Florida Manatees. Report the confidence interval using interval notation. Round solutions to two decimal places, if necessary. A 98% confidence interval is given by Suppose the population standard deviation was unknown, but the marine biologist found the standard deviation of the lifespan of the sample of 30 Florida manatees was 7 years (along with the sample mean of 40.5 years). Determine a 98% confidence interval for the mean lifespan of all Florida manatees using this new information A 98% confidence interval is given by Question Help: D Video

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