At a particular high school students must take 4 years of language. They can cho

Question

At a particular high school students must take 4 years of language. They can choose between Spanish, French, and German After two years they can choose to switch to a new language or stay in their current one. The following is a tree diagram that the probabilities of this scenario, What proportion of students choose to take German for the first two years? 0.25 0.08 0.20 0.80 of the students in the Spanish course, what proportion choose to stay in the course after 2years? Give your answer as a decimal with two decimal places Ex xx.

Explanation / Answer

Question 13.

using total probability rule 1-(0.5+0.22+0.08) = 0.2 is the answer

question 14

again using total probabiloty rule the answer is 1-0.2 = 0.8

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