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3 years ago

4. A representative sample of 50 students from a high school is surveyed. Each student is asked what science class

Mathematics

1 answer:

vesna_86 [32]3 years ago

5 0

Answer:

A, B, C

Step-by-step explanation:

The total number of students is the sum of the students taken each course. Hence the total number of students is:

Total number = 6 + 10 + 18 + 4 + 12 = 50 students

A) The percentage of students offering chemistry = (number of students offering chemistry / total number of students) * 100%

percentage of students offering chemistry = (10 / 50) * 100% = 20%

Option A is correct

B) number of students taking health science = 12, while number of students taking physics = 6. Hence About twice as many students are taking Health Science than are taking Physics.

Option B is correct.

C) The percentage of students taking physic = (6 / 50) * 100% = 12%

Therefore for 150 students, the number of students taking Physics = 12% * 150 = 0.12 * 150 = 18

Option C is correct

D) The percentage of students taking earth science = (4 / 50) * 100% = 8%

Therefore for 25 students, the number of students taking earth science = 8% * 25 = 0.08 * 25 = 2

For every 150 students we could predict that 18 of the students are taking Physics.

Option D is correct

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