The following data represents the age of 30 lottery winners.

Given the grouped frequency distribution for the data:

Age. Frequency. Relative Frequency

[20,29]. 4 0.1333

[30,39]. 5 0.1667

[40,49]. 5 0.1667

[50,59]. 6 0.2

[60,69]. 5 0.1667

[70,79]. 4 0.1333

[80,89] 1 0.0333

What is the frequency of lottery winners of age between 20 and 39?

What percentage of lottery winners are 70 years or older?% (round to two decimal places)

What is the relative frequency of ages under 40?(round to four decimal places)

What is the relative frequency of lottery winners younger than 50?(round to four decimal places)