( I just need question C )
Answer the questions using the result of minitab.
a. The number of wheels on each of the 27 robots is listed here: 4,3,3,3,6,4,2,2,2,1,3,3,3,3,4,4,3,2,8,2,2,3,4,3,3,4,2. Determine the actual proportion of sample observations that fall within the interval x̄ ± 2s
b. Compute the number of ways you can select 13 elements from 20 elements
c. Check if the chance that at least two people in our class (n=66) have the same birthday (MM/DD) is very unlikely or very likely?