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miskamm [114]
2 years ago
15

Bluesky air has the best on-time arrival rate with 80% of its flights arriving on time. a test is conducted by randomly selectin

g 16 bluesky air flights and observing whether they arrive on time. what is the probability that 2 flights of bluesky air arrive late? (please carry answers to at least six decimal places in intermediate steps. give your final answer to the nearest three decimal places).
Mathematics
1 answer:
MakcuM [25]2 years ago
3 0
I would use binomial distribution to answer this, since a flight being late is an independent event.
So X ~ B(16, 0.2)
The above line states that the probability of X relates to the binomial distribution with 16 trials (the 16 flights) and a 20% (0.2) chance of "success" (in this case the "success" is beimg late, which is weird because being late is not a very good thing, but the question is about being late so allow it)
So the probability of 2 flights arriving late is P(X=2) = 16C2 × 0.2^2 × 0.8^14
(The formula is basically, trialsCsuccesses × (chance of success)^(number of successes) × (chance of failure)^(total trials - successes)

The calculation will give you a probability of 0.211. And that is it :)

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If y = 3x and 2x – 4y = 3, then x=
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2 years ago
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Step-by-step explanation:

To find the HCF of 144 and 180

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m=36

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To find m

Substitute for m when m=36

13(36)-3=

465

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