dana surveyed students in her class. she found that 8 earned an a, 6 earned a b, 4 earned a c, and 2 earned…

dana surveyed students in her class. she found that 8 earned an a, 6 earned a b, 4 earned a c, and 2 earned a d on the last science test. if she randomly surveys one more student from the class, what is the experimental probability that the student would have earned an a on the test?

dana surveyed students in her class. she found that 8 earned an a, 6 earned a b, 4 earned a c, and 2 earned a d on the last science test. if she randomly surveys one more student from the class, what is the experimental probability that the student would have earned an a on the test?

Answer

Explanation:

Step1: Calculate total number of students

$8 + 6+4 + 2=20$

Step2: Calculate experimental - probability formula

The experimental probability $P(A)=\frac{\text{Number of students with A}}{\text{Total number of students}}$. The number of students who earned an A is 8, and the total number of students is 20. So $P(A)=\frac{8}{20}=\frac{2}{5}$.

Answer:

$\frac{2}{5}$