The 5th graders at Scottsville Elementary were randomly
surveyed. They were asked if they wanted to go on a field trip or
have a picnic at the end of the year. The results are shown in the
table.
How many of the 100 5th grade students would you expect to
want to go on a field trip?
Field trip : 20 students
Picnic : 5 students
To find out how many students would be expected to want to go on a field trip out of the 100 5th-grade students surveyed, we can calculate the proportion of students who chose the field trip option:
Proportion = Number of students who chose the field trip option / Total number of students surveyed
Proportion = 20 students / 25 students (20 students who chose field trip + 5 students who chose picnic)
Proportion = 0.8
Finally, to find out how many students would be expected to want to go on a field trip out of the 100 5th-grade students surveyed, we can multiply the proportion by the total number of students:
Expected number of students choosing a field trip = 0.8 x 100 students = 80 students
Therefore, you would expect 80 out of the 100 5th-grade students to want to go on a field trip.