Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly listed for at least a year, have a stock price of at least $5 per share, and have reported annual revenue between $5 million and $1 billion. The tableshows the ages of the chief executive officers for the first 60 ranked firms.

Age	Frequency	Relative Frequency	Cumulative Relative Frequency
40-44	3
45-49	11
50-54	13
55-59	16
60-64	10
65-69	6
70-74	1

1. What is the frequency for CEO ages between 54 and 65?
2. What percentage of CEOs are 65 years or older?
3. What is the relative frequency of ages under 50?
4. What is the cumulative relative frequency for CEOs younger than 55?