Statistics and Probability
Check attachment for the questions. Please show work so I can understand ?
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The 1st one is very clear. Thank you. What formula was used for the 2nd one? That's the ine I had the most trouble with. Thanks again!

And the probability seems wrong as well. Is it not 0.00039? Just trying to understand.

The formula for the amount of ways choosing n objects from a set of k objects is nCk (read "n choose k") = n!/((nk)! * k!). Also, 0.00039 = 0.039%

Ok thank you so much for the help!
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