Among beginning statistics students in one university, 46 students out of 446 reported family incomes ranging from $40,000 to $50,000 a year.

(a) About what percentage had family incomes in the range $40,000 to

$50,000 a year?

(b) Guess the percentage that had family incomes in the range $45,000 to

$46,000 a year.

(c) Guess the percentage that had family incomes in the range $46,000 to

$47,000 a year.

(d) Guess the percentage that had family incomes in the range $47,000 to

$49,000 a year. plo47