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mart [117]
3 years ago
14

Niamh runs 6 km in 30-minutes what is the average speed in km h

Mathematics
2 answers:
mylen [45]3 years ago
6 0

Answer:

12 km/hr

Step-by-step explanation:

SIZIF [17.4K]3 years ago
4 0

Step-by-step explanation:

Speed = Distance / Time

given distance = 6km

time = 30 minutes = 30/60 hr = 1/2hr

speed =

\frac{6}{\frac{1}{2} }  \\  = 6 \div  \frac{1}{2}  \\  = 6 \times 2 \\  = 12 \frac{km}{h}

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Consider the probabilities of people taking pregnancy tests. Assume that the true probability of pregnancy for all people who ta
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Using conditional probability, it is found that there is a 0.8462 = 84.62% probability that a woman who gets a positive test result is truly pregnant.

<h3>What is Conditional Probability?</h3>

Conditional probability is the probability of one event happening, considering a previous event. The formula is:

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

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In this problem, the events are:

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The probability of a positive test result is composed by:

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Hence:

P(A) = 0.99(0.1) + 0.02(0.9) = 0.117

The probability of both a positive test result and pregnancy is:

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Hence, the conditional probability is:

P(B|A) = \frac{0.99(0.1)}{0.117} = 0.8462

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You can learn more about conditional probability at brainly.com/question/14398287

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