a science teacher presented a balloon to her class, and posed the question, \if i keep this balloon in the…

a science teacher presented a balloon to her class, and posed the question, \if i keep this balloon in the freezer overnight, what will occur?\ she followed up with, \how certain are you of your answer?\ the teacher recorded her students responses. shrink expand certain 4 5 uncertain 6 4 what is the probability that a randomly selected student was certain and believes the balloon will expand? simplify any fractions.

a science teacher presented a balloon to her class, and posed the question, \if i keep this balloon in the freezer overnight, what will occur?\ she followed up with, \how certain are you of your answer?\ the teacher recorded her students responses. shrink expand certain 4 5 uncertain 6 4 what is the probability that a randomly selected student was certain and believes the balloon will expand? simplify any fractions.

Answer

Explanation:

Step1: Find total number of students

$4 + 5+6 + 4=19$

Step2: Find number of students who are certain and believe balloon will expand

The number of students who are certain and believe the balloon will expand is 5.

Step3: Calculate probability

The probability $P$ is the number of favorable outcomes divided by the total number of outcomes. So $P=\frac{5}{19}$.

Answer:

$\frac{5}{19}$