A sample of 323 people is selected. The people are classified according to place of residence ("urban", "suburban", or "rural"). They are also classified according to highest educational degree earned ("no college degree", "two-year degree", "four-year degree", or "advanced degree"). The results are given in the
contingency table below.
No college degree
Two-year degree
Four-year degree
Advanced degree
Urban
33
35
25
33
Suburban
27
26
17
26
Rural
37
17
24
23
What is the relative frequency of people in the sample whose highest degree is a four-year degree?
Round your answer to two decimal places.
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