Answer in Statistics and Probability for ervey #136104
January 22nd, 2023
Solution
X~ discrete uniform (1,11)
“f(x) = {1 over b-a+1}”“f(x) = {1 over 11-1+1}={1 over 11}”
The probability of the package arriving on any of the days is 1/11.
The number of days you’ll be out of town is 3
Thus we calculate P(X=3)
“F(x) =P(X le x) ={ x-a+1 over b-a+1}”
“={ x-1+1 over 11-1+1}={xover 11}”
“P(X le 3)={3 over 11} = 0.2727”
Answer : 3/11 or 0.2727