The lifetime of a certain brand of battery is known to have a standard deviation of 16 hours. Suppos

The lifetime of a certain brand of battery is known to have a standard deviation of 16 hours. Suppose that a random sample of 90 batteries has a mean lifetime of 41.1 hours. Find a 95% confidence interval for the true mean lifetime of all batteries of this brand.

"Is this question part of your assignment? We can help"

ORDER NOW