Anna needed to let everyone in the music club know the time of its next meeting. She called two people and asked each of
them to call two other people, and so on. If each phone call takes
one minute, how many phone calls were made during the fifth minute?

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.