determining probability of scoring 80

Not what you're looking for? Search our solutions OR ask your own Custom question.

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

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 December 15, 2022, 4:11 pm ad1c9bdddf
https://brainmass.com/statistics/probability/determining-probability-scoring-10762

Solution Preview

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 ...

Solution Summary

The solution assists with determining probability of scoring 80 in Statistics, scoring 80 in Economics, and both is given.

$2.49