SOLUTION: I am having a problem with determinng discrete and continuous variables, and if they are binomial. if binomial give values for n and p. I have finished all the probabilty distribut
Question 312814: I am having a problem with determinng discrete and continuous variables, and if they are binomial. if binomial give values for n and p. I have finished all the probabilty distribution problems and these are holding me up:
Number of times a head is flipped in 10 coin flips?
I have discrete, binomial n=10 p=.5
Time to complete a 30 question multiple choice test
I have continuous
Number of correct answers on a 30 question multiple choice test for someone who randomly guesses each answer. There are 4 answer choices for each question.
I have discrete, binomial n=30 p=1/4
A woman buys a lottery ticket every week for which the probabilty of winning at all is 1/10. She continues to buy them until she has won 3 times. X=number of tickets she buys.
I have continuous
If I have any wrong can you please explain what I did wrong? I appreciate it
Kim Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website! A woman buys a lottery ticket every week for which the probabilty of winning at all is 1/10. She continues to buy them until she has won 3 times. X=number of tickets she buys.
You have that as continuous, which is wrong. It can't be continuous because
she cannot buy a fraction of a ticket. When the random variable has to be an
integer the distribution is discrete. That one is discrete but is not binomial.
Edwin