Asked by jazzy
                A number cube has sides labeled 1 to 6.
Hannah rolls the number cube 18 times.
How many times can she expect to roll a
number less than 3?
A2 C6
B3 D8
            
        Hannah rolls the number cube 18 times.
How many times can she expect to roll a
number less than 3?
A2 C6
B3 D8
Answers
                    Answered by
            Ms Pi 3.14159265358979323
            
    The expected value is the number of rolls multiplied by the probability of each success on the roll (as success is the top face of the die is a 2 or a 1) and the probability of that success is 2/6 which reduces to 1/3
So the expected value in 18 rolls
= 18 x 1/3
    
So the expected value in 18 rolls
= 18 x 1/3
                    Answered by
            shumera
            
    the answer is A
    
                    Answered by
            NILSOJ
            
    the answer is 6 or C I had the same exact question and I got it right.
    
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