Answer :
Probabilities are used to determine the chances of events
It is not guaranteed to have a sum of 7 once in 6 rolls
The probability is given as:
[tex]Pr = \frac 16[/tex]
The number of rolls is:
[tex]n = 6[/tex]
The expected value of having a sum of 7 is calculated using:
[tex]E(x) =np[/tex]
So, we have:
[tex]E(x) =6 \times \frac 16[/tex]
[tex]E(x) =1[/tex]
This means that, in 6 rolls of 2 dice, it is expected to have a sum of 7 once; however, it is not guaranteed.
Hence, it is not guaranteed to have a sum of 7 once;
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