Question

)Ben takes a random sample of 25 students in his seventh-grade class and finds that 85% of the sample prefers math over science. There are 150 students in the seventh grade. Based on the sample proportion, about how many students in the seventh grade would be expected to prefer math over science? 25 85 150 128

Answer 1

Answer:

128

Step-by-step explanation:

85% of 25= 21.25

No. of samples that can be possible from 150 students= 150/25 = 6

therefore,

number of students who prefer maths over science = 6×21.25 = 127.5 students

128 ~ 127.5

Though this question is mathematically correct it is logically impossible to have 0.5 of a student prefer math over science. Therefore the correct answer should have been 127 and not 128 because the 128th student prefers both half half.