Discuss the below:
Q: Talk Time on a Cell Phone: Suppose the 'talk time' in digital mode on a Motorola Timeport P8160 is normally distributed with mean 324 minutes and standard deviation 24 minutes.
(a) What percent of the time will a fully charged battery last at least 330 minutes?
(b) What is the probability that a random sample of n = 15 batteries results in a mean talk time of at least 330 minutes?
(c) What is the probability that a random sample of n = 30 batteries results in a mean talk time of at least 330 minutes?