Question

Pablo rolled a standard die thirty times. He got a 1 eight times. How does this result compare to the expected results? Explain.

Answer 1

i dint get the question ?

Answer 2

What is the expectation of the binomial distribution if N is the number of observations and P is the probability of success?

Answer 3

You can model this as 30 random tosses of the die, with success being a "1" and fail being a "0". What is N and what is P to get the expectation of a binomial random variable?

http://en.wikipedia.org/wiki/Binomial_distribution

The expected number of times you to get a "1" in 30 tosses of a die, would just be N*P=30*(1/6) or 5 times. So getting 8 1's in 30 tosses is a little higher than average.