(Solved): A random sample of 39 lithium batteries has a mean lifetime of 545 hours with a standard deviation o ...
A random sample of 39 lithium batteries has a mean lifetime of 545 hours with a standard deviation of 40 hours. The 90% confidence interval for u, the mean lifetime of all lithium batteries is: Use the tables and flow charts in the provided Formula & Tables packet. Enter your answer to one decimal place.
A random sample of 39 lithium batteries has a mean lifetime of 545 hours with a standard deviation of 40 hours. The 90% confidence interval for μ, the mean lifetime of all lithium batteries is: Use the tables and flow charts in the provided Formula \& Tables packet 3 . Enter your answer to one decimal place.