MS. Winkler surveyed her students in just one class with 30 students to see how many siblings each of them had. Here are the results
Only child: 5
1 sibling: 7
2 siblings: 13
3 or more siblings: 5
If she were to survey all 140 of her students, predict how many total have just 1 sibling. (Round to the nearest whole number)
Answer choices:
a) 33
b) 30
c) 42
d) 2
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