Question

ms. stewart teaches three science classes. her students are freshmen and sophomores. her student data are shown in the relative - frequency table.

	biology	chemistry	physical science	total
sophomores	0.2	0.25	0.1	0.55
total	0.35	0.35	0.3	1.0

which statement is false?
a. 35% of her students are in biology.
b. 25% of her students are in chemistry.
c. 45% of her students are freshmen.
d. 30% of her students are in physical science.

Explanation:

Step1: Analyze option A

From the table, the total relative - frequency for Biology is 0.35, which means 35% of her students are in biology. This statement is true.

Step2: Analyze option B

The total relative - frequency for Chemistry is 0.35, which means 35% of her students are in chemistry, not 25%. This statement is false.

Step3: Analyze option C

The total relative - frequency for Freshmen is 0.45, which means 45% of her students are freshmen. This statement is true.

Step4: Analyze option D

The total relative - frequency for Physical science is 0.3, which means 30% of her students are in physical science. This statement is true.

Answer:

B. 25% of her students are in chemistry.