A total of 2430 American adults responded to a survey about their income class and their general health level. The table to the right summarizes their Health in General Excellent Good Рor Total Upper Income Middle Income 240 54 514 220 415 577 276 1268 responses. Lower Income 140 258 250 648 Total 775 1075 580 2430 a. What proportion of the lower-income adults have excellent health? (Type an integer or decimal rounded to three decimal places as needed.) b. What proportion of the middle-income adults have excellent health? (Type an integer or decimal rounded to three decimal places as needed.) c. What proportion of the upper-income adults have excellent health? (Type an integer or decimal rounded to three decimal places as needed.)

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