Arrange from greatest to least the regions whose populations have 9 as the power

Mathematics

2 answers:

klemol [59]3 years ago

7 0

Answer:

i dont know

Step-by-step explanation:

valentina_108 [34]3 years ago

4 0

Based on the information given, it should be noted that the regions whose populations have 9 as the power include Africa and Asia.
Information regarding the population.
From the complete information, it can also be deduced that the regions whose populations have 8 as the power include North America, Latin America, and Caribbean.
The regions that have populations with 7 as their power of 10 include Oceania.
In conclusion, the regions whose populations have 9 as the power include Africa and Asia.

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Suppose a test for a virus has a false-positive rate of 0.009 and a false-negative rate of 0.002. Assume that 1.5% of the popula

lawyer [7]

Answer:

(a) 0.023835

(b) 0.6281

Step-by-step explanation:

(a) The chance someone from this population will test positive is given by the percentage of people who have the virus multiplied by the change of testing positive (1 - false-negative rate) added to the percentage of people who do not have the virus multiplied by the change of testing positive (false-positive rate)

$P(+) = 0.015*(1-0.002)+(1-0.015)*0.009\\P(+) = 0.023835$

(b) The probability that someone actually has the virus given that they have tested positive is determined as the probability of having the virus and testing positive divided by the probability of testing positive:

$P(V|+) = \frac{ 0.015*(1-0.002)}{0.023835}\\P(V|+) = 0.6281$