Thank you for the opportunity to help you with your question!
you did'nt mention how much we selected but this is complete solution you can add selected pieces accordingly
i selected 5 wood and 10 graphite are defective
We must notice that the requirement for "wood or defective" excludes "wood and defective" choices!!
15 in 200 rackets are defective so the chance of choosing a defective racket is 15/200 = 0.075
The probability that the choice is wood but not defective is 95/200 =
0.475 so that the total probability of wood or defective = 0.075 + 0.475
Please let me know if you need any clarification. I'm always happy to answer your questions.
15 Million Students Helped!
Sign up to view the full answer