A fair die is rolled n=113 times, each time observing the number of dots appearing on the topside of the die. The number of dots showing on the topside of toss i is a random variable represented by Xi. What is the mean and standard deviation of Xi?
1 Answer
Apr 1, 2018
As it's totally random and the answer can't be trusted upon,
The maximum number of dots in a die: 6
The least number of dots in a die: 1
Now,
The value of average in maximum would be
Likewise,
The value of average in minimum would be
Now,
Calculating average of maximum and minimum average can help us find where the values of actual average might be:
Assuming that our average was 3.5,
Standard deviation =
Assuming that mean is 3.5 and all the dots were 6(Mean can't be 3.5 when all the dots were 6 but still trying to just get an estimate),
S.D would be somewhere around (guess):