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s1 help

s1.jpg


i need help WITH THE LAST PART
i have no idea so don't ask what i have done so far i have done the rest of the questions except last part

answer is
0.285
Original post by coolgamer
s1.jpg


i need help WITH THE LAST PART
i have no idea so don't ask what i have done so far i have done the rest of the questions except last part

answer is
0.285

Hi. On the last part, the possible arrangements of scores where the second is higher than the first are
(0,5), (0,10), (0,15), (5,10), (5,15), (10,15)

For each of these, work out the probabilities,
e.g. for (0,5), the probability is 0.6 x 0.24, i.e. 0.144

Adding up all of the probabilities will give 0.284544, rounding to 0.285 (3.s.f)

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