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3 years ago

5

Suppose that in a certain part of the world, in any 50-year period the probability of a major plague is .39, the probability of

a major famine is .52, and the probability of both a plague and a famine is .15. what is the probability of a famine given that there is a plague?

1 answer:

antiseptic1488 [7]3 years ago

4 0

<span>Answer: P(famine | plague) = P(famine and plague) / P(plague) = (0.15) / (0.39) = 0.385</span>

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Answer:

Arc length is equal to $\theta r$ where $\theta$ is the angle in radians and $r$ is the radius.

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$\frac{\pi}{2}=\frac{\pi}{6}\times3$

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3 years ago

4. A drawer contains 21 black socks and 9 white socks. A number generator simulates randomly selecting 10 socks from the drawer.

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There are 21 black socks and 9 white socks. Theoretically, the probability of picking a black sock is 21/(21+9) = 21/30 = 0.70 = 70%

Assuming we select any given sock, and then put it back (or replace it with an identical copy), then we should expect about 0.70*10 = 7 black socks out of the 10 we pick from the drawer. If no replacement is made, then the expected sock count will likely be different.

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3 years ago

The city of Raleigh has 9,200 registered voters. There are two candidates for city council in an upcoming election: Brown and Fe

sukhopar [10]

Answer:

A) The population of this survey is the registered voters in the city of Raleigh.

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D) 0.325

E) 3088

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A) The population of this survey is the registered voters in the city of Raleigh.

B) Population size can be defined as the total number of individuals in a population. Here the total number of individuals are the registered voters in the city. Therefore the size of the population is 9500.

c) Sample size is defined as the number of individual samples in a statistical test. Here the sample size is the 200 randomly selected registered voters. It is denoted as "n".

d) The sample statistic for the proportion of voters surveyed who said they'd vote for Brown would be:

p' = voters for brown / sample size

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The sample statistic for the proportion of voters surveyed who said they'd vote for Brown is 0.325

E) The expected number of voters for Brown based on the sample:

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3 years ago

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ahrayia [7]

Answer:

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2 years ago

Read 2 more answers

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