A magazine published data on the best small firms in a certainyear. These were firms which had been publicly traded for at leasta year, have a stock price of at least $5 per share, and havereported annual revenue between $5 million and $1 billion. Thetable below shows the ages of the chief executive officers for thefirst 68 ranked firms.
| Age | Frequency | RelativeFrequency | CumulativeRelative
Frequency |
|---|
| 40-44 | 9 | | |
| 45-49 | 11 | | |
| 50-54 | 13 | | |
| 55-59 | 16 | | |
| 60-64 | 10 | | |
| 65-69 | 8 | | |
| 70-74 | 1 | | |
(a) What is the frequency for CEO ages between (but notincluding) 54 and 65? (Enter your answer as a whole number.)
(b) What percentage of CEOs are 65 years or older? (Round youranswer to the nearest whole number.)
%
(c) What is the relative frequency of ages under 50? (Round youranswer to two decimal places.)
(d) What is the cumulative relative frequency for CEOs younger than55? (Round your answer to two decimal places.)
