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1. The probability is 50 percent.

   what is probability?

   • The likelihood that a specific occurrence will occur  the proportion of the total number of available outcomes to the number of possibilities in a comprehensive set of equally probable options that result in a certain event.

   • A field of mathematics that focuses on the investigation of probability.

   Given that,

   Class has 19 boys and 20 girls , out of which five students are to be chosen for presentation.

   Sets are:

   (0 Boy, 5 Girls)

   (1 Boy, 4 Girls)

   (2 Boys, 3 Girls)

   (3 Boys, 2 Girls)

   (4 Boys, 1 Girl)

   (5 Boys, 0 girl)

   Total sample size =6

   Probability that more boys than girls are chosen = No. of times boys are more/ Total sample size.

   3/6

   = 0.5

   That is 50 percent.

   Learn more about probablity here:

   https://brainly.com/question/24756209

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