Are you sure this is normal? I am thinking it is a normal approximation to binomial.
Anyhow, first find the probability of the die summing to 5 on any given roll.
What do you get?
Hey,
Im having trouble with this question, i really dont know how to start it...
Calculate the probability that 200 rolls of two dice rolls will unclude
a) more than 30 sums of 5
b) between 30 and 40, inclusive, sums of 5
Thanks in advance.
Yea sorry i meant Normal approximation =\
ooh nvm i got it
This is what i did.. found that the probability of getting 5 from two dice is 1/9
then i found the mean (1/9 * 200) = 22.22
standard deviation = 4.44
and then i did P(x>30.5)
and i got the right answer which is 0.0312
Thanks for your help.