Determining probability of scoring

Reference no: EM13104098

Jessica must finish two courses (much like myself), statistics and economics, in order to complete the requirements for a BA degree. All along she has maintained an 80% average. She has calculated probabilities of scoring in the remaining two courses as follows:

Probability of scoring 80 in Statistics= 0.80
Probability of scoring 80 in Economics= 0.40
Probability of scoring 80 in both= 0.30

What is the probability that she will score 80 in at least one of her courses? What is the probability that she will NOT score 80 in either course?

Reference no: EM13104098

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