Sheila either walks or cycles to school. The probability that she walks is 0.65, is she walks the probability she is late is 0.4
. If she cycles the probability that she is late is 0.1. Work out the probability that on any one day Sheila will not be late for school
1 answer:
Answer:
0.705
Step-by-step explanation:
From the question :
P(not being late) = p(walking and not late) + P(cycling and not late)
P(walking and not being late) = 0.65 * (1 - 0.4) = 0.65 * 0.6 = 0.39
P(cycling and not being late ) = (1 - 0.65) * (1 - 0.1) = 0.35 * 0.9 = 0.315
Hence,
P(not being late) = 0.39 + 0.315 = 0.705
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