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You have 4 questions, each of which she has a 0.2 probability of answering correctly...
so would n=20 because thats how many choices you have
n is the number of trials
can you actually help me with the rest of it cause i can't figure it out!
Haha i didn't notice that until you pointed it out!
I like the use of the word probably in a probability question. Very good!
yea i think i can probably figure it out after what you have answered. its my take home midterm and my teacher wasn't very helpful in explaining it.
your a life saver!!!!!!!
I do not have to make a distribution there is already one. It is called the Binomial distribution.
Linda took a multiple choice test she did pretty well, but there were 4 questions where she had to guess. Each question had 5 choices for answers. Make up a probability distribution for the number of correct guesses. What is the probability that she got at least one right? what is the probability that she didn't get them all right? what is the mean and standard deviation for the number of correct guesses?