Answer
In Minitab, Select Calc -> Column Statistics
In "Statistic" select "Mean".
In "Imput variable" enter C1.
Click OK.
The result for the mean will be given.
Work Step by Step
$μ_X=np=30\times0.98=29.4$
In my simulation: $μ_X=29.25$
The results are very close!
Other simulations are possible.