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?© BrainMass Inc. brainmass.com March 4, 2021, 5:47 pm ad1c9bdddf
a) What is the probability she will score 80% in at least one of her courses?
b) What is the probability she will NOT score 80% in either course?
a) I think one difficulty with this question is the wording. I take 'at least one' to ...
The solution assists with determining probability of scoring 80 in Statistics, scoring 80 in Economics, and both is given.