Probability homework

[Mariahpapaya]

Igor decided to answer each of the 10 true or false questions on a quiz by flipping a coin. What is the probability Igor will get a 90% or better? What about a 60% or better?

 

[Dr.Peterson]

Please show us your own thoughts, so we can tell what help you need.

Have you learned about the binomial distribution? Have you translated the question to one about the number of heads in 10 tosses?