Arandom sample is used to estimate the mean time required for caffeine from products such as coffee or soft drinks to leave the body after consumption. a 95% confidence interval based on this sample is: 5.6 hours to 6.4 hours (for adults).

what is the sample mean (x with bar on top )?

Find the balance at the end of 4 years if 1000 is deposited at the rate of

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?